I ________ work out the problem at first, but after my teacher showed me an example, I ________ get the answer easily.
| A．couldn’t; was able to | B．can’t; could |
| C．wasn’t able to; could | D．was able to; was able to |
_____ when one loses freedom does one know its value.
| A．Just | B．Only | C．Even | D．Ever |
Little Jim is going to spend his holiday in Paris, _____ lives his uncle.
| A．which | B．who | C．where | D．that |
The problem is not _____ easy. Think _____ over.
| A．such, it | B．that, it | C．so,不填 | D．that，不填 |
It is so difficult a problem that _____ student in this class _____ work it out.
| A．any, can't | B．no, can | C．every, can | D．no, can't |
Mr Zhang gave all the textbooks to all the pupils , except _____ who had already taken them .
| A．these | B．ones | C．the ones | D．the others |