Robert wishes that he ________ business instead of history when he was in university.
| A．studies | B．studied |
| C．has studied | D．had studied |
---Don’t forget to bring my new books tomorrow afternoon.
-- No, I ________.
| A．don’t | B．can’t | C．won’t | D．couldn’t |
We always keep ____ gas in case we run out.
| A．a great number of | B．plenty of | C．much too | D．a good many |
With no one to ____in such a frightening place ,she felt helpless.
| A．turn to | B．turn in | C．turn off | D．turn over |
They have no idea at all ________.
| A．where has he gone | B．where did he go |
| C．which place he has gone | D．where he has gone |
She ________the film, for she knows nothing about it.
| A．can’t see | B．can’t have seen | C．must see | D．mustn’t have seen |