---_________ ?

---I’m not sure, but he might have been ill in bed.

A. What do you think has happened to Tom

B. What do you think Tom has happened

C. Do you think what has happened to Tom

D. Do you think what Tom has happened

By the time he realizes he _____ into a trap, it'll be late for him to do anything about it．

       A．walks      B．walked             C．has walked       D．had walked

I heard a terrible noise in his room and went to see what it was all ___.

A. around   B. out    C. about    D. through

I walked 20 miles that day.I never thought I was able to walk ___ far.

A. this  B. that    C. such      D.as

It was a time      many sad things happened to her and she had to         them.

A. that; be on good terms with                 B. which; bear

C. in which; come to terms with                D. when; come to term with

Estuaries provide both recreation and education for human beings. They also _____ the economy through tourism and fishing.

   A. contribute to   B. adapt to   C. respond to   D. apply to

There are a lot of projects _________, so we’d better take a short break before we continue.

   A. to discuss                B. discussing                      C. discuss                            D. to be discussed

It is the way he talks with his mother       is different from       we were used to．

A．that：that        B．which；what     C．that；which      D．in which;where

 Christmas____, the family was full of excitement. 

A. was then only days away      B. were then only days away 

C. then only days away          D. having been then only days away 

Some of the schools in Shanghai have moved one step closer to _____ with the global education community.

　A. being connected                 B. connect

　C. having connected                D. be connected