—Hey, Jack. You ________ on the phone just now. But you weren’t here and the man left a phone number.—Oh? I was in the library.
Can you tell me ________ at that time?
I didn’t go out ___ the weather got fine.
3There __________ a meeting tomorrow afternoon. A. will be going to B. will going to be
There are three ________ students in their school.
---Would you mind opening the window ? ---_______.