No matter how hard he worked, ___ ____
| A．he could not do any better | B．and he could not do any better |
| C．so he could not do any better | D．but he could not do any better |
How______I help them to understand when they won’t listen to me?
| A．can | B．would | C．may | D．must |
So hard _______ that he can go to an ideal university.
| A．studied Tom | B．did Tom study |
| C．does Tom studay | D．studies Tom |
QQ, ______you can chat with your friends, makes communication easy.
| A．why | B．which | C．that | D．where |
These tax laws which are intended for domestic companies do not _____ to foreign companies.
| A．contribute | B．lead | C．apply | D．fit |
The film is very humorous but______can be enjoyed unless you understand English culture.
| A．everything | B．something | C．nothing | D．anything |