To reach Africa, we flew high mountains, deep valleys and great deserts(沙漠)

Can she play the guitar or the violin–______. But she can play the drums.

.—-I really expect there will be less pollution in Shaoxing.—-_________.In this way everyone will be much healthier.

________ in a heavy traffic jam in a taxi while you are hurrying to the airport is quite an unpleasant experience.

下面哪一组字母的顺序是正确的。