He apologized for ______ to inform me of the change in the plan.
| A．his being not able | B．him not to be able |
| C．his not being able | D．him to be not able |
Never before seen anybody who can play tennis as well as Robert.
| A．had she |
| B．she had |
| C．has she |
| D．she has |
You can borrow my car ___ you promise not too fast.
| A．unless |
| B．even |
| C．in case |
| D．a s long as |
You'd better write down the phone number of the restaurant for future ____.
| A．purpose |
| B．reference |
| C．progress |
| D．memory |
By 16:30, was almost closing time, nearly all the paintings had been sold.
| A．which |
| B．when |
| C．what |
| D．that |
――Look! Somebody ____the sofa..
――Well, it wasn’t me. I didn’t do it.
| A．is cleaning |
| B．was cleaning |
| C．has cleaned |
| D．had cleaned |