Choose the incorrect part:
Cans of paint must be shaking to mix the pigments with the medium in which in which they are suspended.

identify the incorrect one from the underlined sections A ray of light passing through the center of a thin lens keep its original direction.

Although both $\frac{of ~them}{\left(A\right)}$ $\frac{are\ trying}{\left(B\right)}$ $\frac{to\ get}{\left(C\right)}$ the scholarship she has the $\frac{highest}{\left(D\right)}$ grades

identify the incorrect one from the underlined sections ,Weather is the transitory expression of climate that can change great from day to day or season to season.

The girls $\frac{were ~sorry}{\left(a\right)}$ to $\frac{had\ missed}{\left(b\right)}$ the singers $\frac{when}{\left(c\right)}$ they $\frac{arrived}{\left(d\right)}$ at the airport.