Improve the underlined clause of the sentence. ‘If the room had been brighter, I would have been able to read for a while before bed time.’

It was not until she had arrived home ______ remembered her appointment with the doctor.

Fill in the blank with appropriate word, phrase and clause(s): Water boils...you heat it to 100°C

If I had been a king, I I-

If you help me, I _____ grateful.