The foreigners arrived ______ Shanghai ______ night. [ ]

The box is too heavy to carry. What’s in it?—Oh, it is ________ books.

Whitney Houston’s sudden death suggests that drug abuse is such a serious problem ______ we should deal with properly.

Be quiet, please. We’re going to have an English test. Now I’m going to _______ your papers.

I haven’t heard from Henry for a long time.—– What do you think ___________ to him?