13. （ ）

(单选题)The manager was concerned to hear that two of his trusted wo (单选题)—Kevin, you look worried. Anything wrong?—Well, I ______ a t (单选题)We lost our way in that small village, otherwise we ______ m (单选题)One of our rules is that every student ______ wear school un (单选题)The US troops ______ out of Afghanistan by the end of this y (单选题)—I don’t think teachers should give too much homework to ___ (单选题)—Do you have Betty’s phone number?—Yes. Otherwise, I ______ (单选题)Some of you may have finished unit one. ______, you can go o (单选题)No sooner ______ than a little boy rushed out of the classro (单选题)They gave money to the old people’s home either ______ or th