—Who helped Linda tidy up the bedroom just now?—_________. She cleaned it all by herself.

A botanist who speaks and writes English is in closer touch with the scientists in other countries than 　　　　who doesn’t．

–What do you think of the lecture?--____but interesting, but I’ve managed to survive it.

—Excuse me, but can you tell me which road I should take to the post office?— __________ of the four roads will do.

There is _______ wrong with your watch. Let me check it.