24、---- Excuse me．Where's Mr. Brown’s office，please?

----It's on the third floor．But he ______ there now．He's gone to the airport to meet some Chinese friends．

A．should be        B．can't be        C．might be        D．mustn't be

22、How close parents are to their children       a great effect on the characters of the children.

A．have          B．to have            C．having          D．has

21、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

20、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

19、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

18、They are always ready to give the vacant seats to       comes first.

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

17、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

16、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

15、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