Our English teacher asked us ____ourhomework before the weekend.

Maria is _____ American girl. She can play_____ chess very well, but she can’t play _____ trumpet.

There are over 58,000 rocky objects in ______ space,about 900 of which could fall down onto ______ earth.

Busy as the working mother is, shestill_____ a lot of time to her children.

It was quite a long time__________I made it out what had happened.