To save class time, our teacher has ______ students do half of the exercises in class and complete the other half for our homework
During the period when he was in hospital, I _______ him to give up smoking but it didn’t seem to help.
______this difficulty is overcome, other problems will be easy to solve.
Don’t mention that at the beginning of the story, or it may ____the shocking ending.
---How long ____ you ____ in Singapore? ---For just the weekend. I’ll be back next Monday morning.
Rather than ______ on a crowded bus, he always prefers _____a bicycle.