"Please __________why you're so late," said his girlfriend.

The rainy season_____ for six months and water gets in among the stones.

(大连市高三双基测试卷) In the dormitory, many students like to _______ pictures to make the room less bare.   

Smile when ______ the phone. The caller will hear it in your voice.

Restaurants in every corner of Mianyang not only provide job opportunities but___ lots of taxes as well.