Hey, Molly, You______ on the phone just now. But you weren’t here and the man left a phone number.-Oh? I was in the library.

What’s wrong with my son, doctor? — ____________ serious, just a slight cold. He’d better drink some water.

Where have you _______ these days? —I have_______ to Hong Kong with my friends.

Rather than on a crowded bus, he always prefers a bicycle．

After discussing, the students ________ some good ideas to work on the project.