The film which _______ the book by Jack London is well worth seeing.
| A．based | B．is based in | C．is based on | D．to be based |
— How are you getting on with your work?
— Oh, I’m sorry. Things aren’t going so well as ____.
| A．plans | B．planning | C．planned | D．to plan |
— Why do you want the book so much?
— ____, sir.
| A．Studying | B．Studied | C．Studies | D．To study |
— I hate talking with that guy. Look, he is coming. What should I do?
— Don’t speak until ____.
| A．speaking | B．spoken to | C．spoken | D．speaking to |
I hear Mr. Smith was writing a story last year and he still ____.
| A．do | B．does | C．is | D．am |
— Why didn’t you come to Mike’s birthday party yesterday?
— Well, I ____, but I forgot it.
| A．should | B．must | C．should have | D．must have |