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22、____ twice, the postman refused to deliver our letters unless we changed our dog.   ks5u

A. Being bitten     B. Bitten   ks5u

C. Having bitten    D. To be bitten   ks5u

21、The biggest whale is ___ blue whale, which grows to be about 29 meters long―the height of ___ 9-story building.   ks5u

A. the; the      B. a; a      C. a; the     D. the; a

20、John was given the same suitcase his father and grandfather ___ with them to school.   ks5u

A. took   ks5u

B. had taken   ks5u

C. were taking   ks5u

D. would take   ks5u

19、His efforts to raise money for his program were ______ because, no one showed any intention to take a cent out of their pockets.  

A. in place      B. in sight          C. in effect         D. in vain  

18、You’d sound a lot more polite if you make a request ______ a question.  

A. in search of                      B. in the form of  

C. in need of                        D. in the direction of  

17、The questionnaire takes ______ ten to fifteen minutes to complete and can be used along with the assessment interview.  

A. mainly       B. punctually       C. approximately    D. precisely  

16、As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.  

A. primary      B. alternative       C. instant          D. unique

15、

In our class, when the bell rang and the teacher closed his book, it was a ______ for everyone to stand up.

A. signal        B. chance          C. mark            D. measure

14、Hiking by oneself can be fun and good for health. It may also be good for ______ building.

A. respect       B. friendship        C. reputation        D. character

13、Some parents are just too protective. They want to ______ their kids from every kind of danger, real or imagined.

A. spot         B. dismiss          C. shelter           D. distinguish