How ___________ your last weekend, Tony— It __________ very good.

To their disappointment，Dr Wang gave a speech about the economy without even a passing________to the problem of unemployment

Look at the boy playing basketball on the ground. Isit George— It ________ be him. He told me he would playbasketball after class, but he’s not sure.

He asked me to find a book ______ his name.

You should make it a rule to leave things _______ you can find them again.