(    )2.Mr and Mrs Black ______ back _________.

A. hasn’t come, yet             B. haven’t come , yet  

C. haven’t , come already      D. hasn’t come , already

(    )3.We haven’t seen each other ________.

A. for a long time      B. two days ago     

C. for two days ago   D. a long time ago.

(    )4.It has been in service ________ 1998.

A. in      B. at        C. or         D. since

(    )5.It _______ seven years __________ Hong Kong returned to China.

A. was, since     B. is, since       C. was, after         D. is , after

(    )6.--- Where are Mike and Jack?

---- They _______ the library.

A. have gone  to    B. have been to   C. has been to      D. has gone to

(    )7.There is a new bridge _______ the Tsing Ma Bridge.liuxuepaper.com