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

14、       the sun sinks lower, shadow spread       the courtyard.

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

13、Listen! His family must be quarreling,       ?

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

12、The children were not       for the accident.

A．blamed           B．to be blamed          C．being blamed           D．to blame

11、--Have you heard of this new brand of computer, Mike?

--Yes, of course and I’ve decided to buy      .

A．it            B．this          C．one          D．that