32．We must take measures to protect endangered wildlife _______ it is too late.

　　　 　　 A．now that　　　　　 B．as long as　　　　　　 C．unless　　　　　　　　 D．before

31．Listen! His family must be quarreling, _______?

　　　 A．mustn’t it　　　　　　 B．aren’t they　　　　　 C．isn’t it　　　　　　　　 D．needn’t they

30．_______ the sun sinks lower, shadow spread ________ the courtyard.

　　　 A．When; through　　 B．When; across　　　 C．As; through　　　　 D．As; across

29．We read them ________; we remember them________.

　A．as young; as old　　　　　　　　　　　　　　　　　 B．as younger; as older

　C．when young; when old　　　　　　　　　　　　 D．when younger; when older

28．Doctor Brown says that _______ what forceful arguments against cigarette harm there are, many people insist on smoking.

　　　 A．though　　　　　　　　 B．however　　　　　　　 C．no matter　　　　　　 D．even if

27．The government has taken some measures to solve the shortage of electricity, but it may be some time _______ the situation improves.

　　　 A．since　　　　　　　　　 B．when　　　　　　　　　 C．unless　　　　　　　　 D．before

26．They are always ready to give the vacant seats to _______ comes first.

　　　 A．who　　　　　　　　　　 B．whom　　　　　　　　 C．whoever　　　　　　　 D．whomever

25．Americans don’t like using Mr., Mrs. or Miss. So, if they don’t use your last name or titles, that really doesn’t mean any _________.

　 　 A．lack respect　 　　　　　　　　　　　　　　　　　 B．lacking respect　　

　　　 C．lacking respecting　 　　　　　　　　　　　　　 D．lack of respect

24．Hello! I _________ you _________ in Shanghai. How long have you been here?

　 　 A．don’t know, were　 　　　　　　　　　　　　　　 B．haven’t known, are　

　　　 C．didn’t know, were 　　　　　　　　　　　　　　 D．hadn’t known, are

23．Was it at the school ______ was named after a hero ______ he spent his childhood?

　 　 A．which, that　 　　 B．where, where　 C．that, where　 　　 D．which, where