单选题 We hadn’t planned to meet. We met _________ chance.

单选题 All these gifts must be mailed immediately__________ in time for Christmas.

单选题 Everyone was on time for the meeting _________ Chris, who’s usually ten minutes late for everything.

单选题 You can’t wear a blue jacket ___________ that shirt. It’ll look terrible.

单选题 To enjoy the scenery, Irene would rather spend long hours on the train ___________ travel by air.

单选题 The classroom is big enough ___________, but we’ll have to move if we have more students.

单选题 — I’m afraid Mr. Wood can’t see you until 4 o’clock. — Oh, __________ I won’t wait.

单选题 ________ two exams to worry about, I have to work really hard this weekend.