（ ） the rain, we would have had a pleasant trip to the countryside.

I don’t like to _____ a room with a stranger.

—Do you like pop music or country music? —（ ）. I only like sports.

Many teenagers feel no difficulty （ ） computer.

He （ ） yesterday morning, and would stay for three days.

By the end of this term, we （ ） 3000 English words in all.

Have you any_____that you were not there at 9 o’clock last night?

Our teachers always tell us to believe in （ ） we do and who we are if we want to succeed.

You （ ） wear your glasses, for the words are rather small.

Smoking is not good （ ） you because it can affect your health.

I have bought _____ useful reference books _____ I don’t know which one to start with.

It’s high time we _____ strict measures to stop pollution.