21.(2.5分) A: when did you graduate? B: ______________ . A、I graduated last year B、I’m from London. C、Great! D、How about you? ...
(单选题) 22: You _____ be careful when you cross here --- the traffic lights aren’t working. A: could B: might C: ought to D: may ...
(单选题) 18: You _____ be careful when you cross here --- the traffic lights aren’t working. A: could B: might C: ought to D: may ...
(单选题) 20: The film __________ for ten minutes when we got to the cinema. A: had already been on B: had already begun C: have already been on D: have already begun ...
(单选题) 4: Mr.Smith ____ when the government for 37 years by the time retires. A: will work B: will have worked C: will be working D: will have been working ...
(单选题) 3: Which of the following is used when you send a message you have received to someone else? A: cc B: bcc C: forward D: draft ...