_____ in prison for ten years, he seems to be unaware of what has happened outside.
| A．Having kept | B．Having been kept | C．Kept | D．Keeping |
Faced with a bill for $ 10,000,_________.
| A．John had to take an extra job | B．the boss has given John an extra job |
| C．an extra job has been taken | D．an extra job has been given to John |
-----My room gets very cold at night.
-----_________________.
| A．So is mine | B．So mine is | C．So does mine | D．So mine does |
At the end of the meeting, it was announced that an agreement ________.
| A．has been reached | B．had been reached | C．has made | D．signed |
----She looks happy. She _______ have passed the exam.
-----I guess so. It is not difficult after all.
| A．should | B．could | C．must | D．might |
Choosing the right dictionary depends on ______ you want to use it for.
| A．what | B．why | C．how | D．whether |