【题目】---Where’s your father? ---He ______ to work.

【题目】She studied________medicine before she became________writer.

【题目】Life is like riding a bicycle. To keep your balance (平衡), you ________ keep moving.

【题目】________ hard, and you will be ________.

【题目】We saw ________ birds when we were climbing the mountain in my home town.

【题目】Mike and Jeff________ TV on weekdays.

【题目】—Dad, are you ________this afternoon?

【题目】Through superior production techniques the factory is able to gain the competitive ________ in theinternational market.

【题目】Practice is the only _______ to testify truth, while learning of theory eventually serves practical application.

【题目】—Is that cap Bob’s?