【题目】Do you know Zhang Xueyou, a famous________ (sing) in Hong Kong, gave a concert in Yancheng last week?

【题目】The environment is becoming even________ (bad) now because of the pollution.

【题目】We’ll have a surprise party for my mother’s________ (forty) birthday next Saturday.

【题目】Suddenly, a lot of________ (leaf) were blown into the house.

【题目】— Do you know________second—hand smoke? — To protect our health.

【题目】— What did the teacher say just now?

【题目】— Why do you like climbing mountains?

【题目】—I was thinking about those questions just now________you asked me last week.

【题目】Our teachers also love us so deeply________our parents.

【题目】— Tom, why are you looking so upset?