【题目】He is patient enough to spend a lot of time__________ (解释)grammar rules to us.

【题目】He raised his voice in order to make people in the back row hear him__________ (清晰地).

【题目】We should stand________line when we are waiting ________a bus.

【题目】This isn't my dictionary. I left________at home.

【题目】Why is David good at English?

【题目】When is World Population Day?

【题目】— I visited you the other day, but you weren’t in.

【题目】— Could you find out ________?

【题目】Which word of the following has a different stress from the others?

【题目】In the following words, which underlined letters have a different sound from others?