【2013福建福州】—Is that girl Susan? — It _________ be her. She left forBeijingyesterday. A.needn't B. can't C. mustn't
.It is said that a wooden bridge_________ over the river in the mountain village soon.
I’d like to travel by air _________ it usually costs a lot of money.
For the safety, everyone _________ obey the traffic rules when he is driving or walking.
This summer vocation I am going to do a lot of _________ to prepare for the senior high school.
--Did you see Mary and her sister this morning? -- Yes, I saw _________ girls playing in the playground.