You can go out, _________you promise to be back before 11 o'clock.

--I will not come here tomorrow.

--_____________to me, because I don’t care.

A. It doesn’t make any difference                        B. It makes much difference

C. It doesn’t make no difference                          D. It makes a difference

_______, we’ll go camping.

A. weather permits         B. If weather will permit

The students ages ____ 15 to 18.

The _____ parents were all _____for the children's safety.

A. concerned; concerned                                     B. concerned; concerning

C. concerning; concerning                                   D. concerning; concerned

There's some doubt ____he'll keep his promise.

A. whether                    B. if                              C. that                        D. which

It was ______ back home after the experiment.

A. not until midnight did he go                            B. until midnight that he didn’t go

C. not until midnight that he went                        D. until midnight when he didn’t go

It was 1969___ the American astronauts succeeded in landing on the moon.

A. that                     B. when                        C. on which                    D. which

It is in the west of China _____ there is no doubt _____it is going to rain tomorrow.

A. where; whether     B. that; that

C. that; whether        D. where; that

The accident ______ the death of two passengers.

A. resulted from          B. resulted in                C. resulted of               D. resulted with