I _____ sooner but I didn’t know that they were waiting for me .
| A．had come | B．was coming | C．would come | D．would have come |
All but one ______ here just now.
| A．is | B．was | C．have been | D．were |
Only in the library _____ the book.
| A．we can get | B．can we get | C．can get we | D．we get |
Teacher: You can't finish the book in less than an hour, I suppose?
Student: __________.
| A．Yes, I'm sure I can | B．No, hardly |
| C．Sorry, I can't | D．I don't think I can |
I’d rather that you ______ the operation right away.
| A．perform | B．should perform | C．will perform | D．performed |
You _______ last night, but you went to the concert.
| A．must have studied | B．might study | C．should have studied | D．would study |