Why are you so anxious? It isn't your problem.
After Yang Liwei succeeded in circling the earth ,___our astronauts desire to do is walk in space .
we can not figure out ____quit a number of insects ,birds ,and animals are dying out .
The road is covered with snow. I can’t understand ________ they insist on going by motor-bike.
--Do you mind if I smoke here?--____________. A. Sure. Go ahead B. No. Go ahead C. Yes. Please
I hope there are enough glasses for each guest to have___________.