Even though he was disabled, he can do many things ______ swimming, writing and reading. [ ]

All of us want to do more work with _________ time and ________ workers.

If you are an outgoing boy, you will have _________ friends.

Don’t play a trick ______ him. [ ]

Listen! David is talking happily with his mother in the next room.　— It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.