He ______ English for six years by the time he takes his examination.
| A．was studying | B．would have been studying |
| C．had been studying | D．will have been studying |
"Don't forget to come to my birthday party tomorrow."
"__________."
| A．I don’t' | B．I won't | C．I can't | D．I haven't |
There isn’t such a word ______ I know.
| A．as soon as | B．as long as | C．so long as | D．so far as |
You can choose _____ book you like among these.
| A．no matter what | B．whatever | C．whose | D．whichever |
______ she said this, she regretted it.
| A．The time | B．The moment | C．The hour | D．The day |
Another driver had just driven into the back of Jack's car ______ he was waiting at some traffic lights.
| A．since | B．once | C．while | D．during |