We are living in an age _____ many things are done on computer.
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.
The man ______ was a friend of mine.
As your spoken English gets better, ______ your written English.