Jim, here _________ some letters for you. A: A.is B: B.are C: C.have D: D.Has

The train 2515 __________at 8:00 every morning A: is leaving B: B.leaves C: C.will leave D: D.has left

Many a student ___that mistake before. A: A．had made B: B．has been made C: C．have made D: D．has made

I was out of town at the time, so I do not know exactly how it ______. A: was happening B: B．happened C: C．happens D: D．has happened

Look at the timetable. Hurry up！Flight 4026 ____ at 18∶20. A: A．takes on B: B．will take off C: C．takes off D: D．has taken on

It’s difficult to get to the other side of the river．I think a bridge _______ over the river． A: A．should be built B: B．should build C: C．will build D: D．has built

Any student ______ in swimming can apply for membership. A: having a keen interest B: B．with a keen interesting C: who is keenly interesting D: D．has a keen interest

-Where is your father?-He ________ Australia and he ________ Sydney for two weeks. A: has been to;has been in B: has gone to;has been in C: has been in;has been to D: has gone to;has been to

John has never been on time, ( )? A: as John B: has not John C: has he D: has not he

10. With his hard work, John ____ the basic knowledge of computer.A. has caught B. has acquired C. has required D. has acknowledged A: A. has caught B: B. has acquired C: C. has required D: D. has acknowledged