【题目】It is true that most students like the teachers ______ understand them well.

【题目】— Do you know why Tom stay after school this morning?

【题目】—What do animals eat?

【题目】—I won’t go to Bill’s birthday party this Friday .

【题目】We can’t understand the love of our parents ______we become parents ourselves some day.

【题目】—Excuse me, where’s the supermarket?

【题目】I would rather spend time ______ at home than ______ out with you.

【题目】Everyone should _______ protecting the environment.

【题目】The red skirt is so expensive ______ it’s made of leather(皮革).

【题目】It’s ______ 12 o’clock at noon. We have to go back for lunch.