________ books aren’t old. ________ are new.
—Would you mind if I sit here?—_________. It’s for Miss Zhang.
The first thing _____ my brother is going to do this afternoon is to write a letter.
—Let’s go fishing if it _____ this weekend.—But nobody knows if it _______.
Smoking is bad for your health. You’d better _______.
Try to sing some English songs, you’ll find it interesting _____ a foreign language.