Could you give us some advice about this competition?—If you want to win first prize,your design for the museum must be________.[ ]

Excuse me, but I want to use your car. — Well, you__ have my car unless you use it well.

They _______ in the newspaper that they had a used car for sale.

g what he said, the whole hall fell _________ with no one saying anything.

It is vital to ______ to teenagers the simple fact that _______ the Internet will more or less do harm to both mental and physical health.