Teaching is a noble profession. (a) ____ to be a teacher, one must possess some noble qualities too. (b) ____ he should be a student. (c) ____ teaching is related to knowledge, he can't acquire knowledge (d) ____ he is a student. (e) ____ a teacher thinks (f) ____ he knows everything, he can't be a good teacher. (g) ____ thirst for knowledge is the second best quality of a teacher. (h) ____ a teacher should be a psychologist. Different students have different ways of learning.(i) ____ the teacher needs to teach his students by studying their psychology. Fourthly a teacher should have good delivery power. (j) ____ his voice should be clear (k) ____ artistic. (l) ____ a teacher should be an actor (m) ____ he needs to behave according to the classroom situation. And (n) ____ a teacher must be a good human being.

Time and tide wait for none. (a)____, no one can stop the onward march of time. (b)____, it is very important to value our time. (c)____, if time once has gone, we cannot regain it. (d)____, we should not waste a single moment in vain. (e)____, we should make proper use-of every single moment of our life. (f) ____, the students should understand the value of time. (g)____, it is a matter of great regret that some of the students pass away their valuable time in Facebook. (h)____, they kill their time, (i)____, they cannot prepare their lessons well. (j)____, they always have a poor preparation for the examination. (k) ____ they cannot do well in the examination. (l)____ , they do not stop wasting time. (m)____, they continue to waste their time using different social media sites (n) ____ it is too late for them.

Leisure is the moment (a) ____ a man is totally free from his work. In leisure, a man is (b)____ free from work but also from worries and tension. man is his own master and the mind is (c)____, it is a time (d) ____ a our life is full of duties. By performing our duties one after another, it seems (g)____ our life is an exhausting business. This is the tragedy of our life that we cannot avoid our work and worries. (h)____, leisure helps us to break this chain and relaxed (e)____ - - the body is at rest. (f) ____enable us to refresh ourselves and revive our spirit. Leisure, breaks the monotony of existence with a touch of variety. (i) ____ we look into developed countries, we will see that people love to spend their leisure in different ways. (j)____, they never idle away their leisure time. (k)____, it is seen that some people love to go for travelling, some enjoy sight-seeing in different places. (l)____, some people spend their free time playing different types of games. (m) ____ leisure is always a source of joy. (n)____, everybody should try to find leisure to enjoy it to make the life happy and peaceful.

Scientists have always wondered (a) ____ there is life anywhere out in the space. They have joined together in a major project called the communication with Extra Terrestrial Intelligence (b) ____ seeks to establish contact with any other living beings in the universe. (c)____, they are beaming out radio signals into the space. It was thought (d) ____ there exists life on Mars. (e) ____ two viking spacecrafts (f)____ landed on Mars in 1976 did not provide much evidence of life there. The pictures sent by them showed (g) ____ the Mars has a sky; (h)____, the sky is red instead of a blue one like ours. Its gravity is about half (i) ____ strong (j) ____ that of Earth. (k)____, the atmosphere is also much thinner than that of our planet. It has deserts, high mountains, canals, volcanoes, craters etc. as well as summer (l) ____ winter. (m) ____, there are no trees, (n) ____ life forms.