We are sure that our football players will do________ best.

Where is your father?—He isn’t here. He __________ Yushu to help the people in trouble.

Look! One of the boys ______ under the tree.

The factory­­­­­­________ we visited yesterday was the one _______ I once worked.

Tom likes doing things with his family. He’s learned much from ___ His family help him a lot.