
( )1. _______ more attention, the tree could have grown better.
A. Given B. To give C. Giving D. Having given.
( )2. The computer center, ________ last year, is very popular among the students in this school.
A. open B. opening C. having opened D. opened
( )3. The first textbooks ________ for teaching English as a foreign language came out in the 16th century.
A. having written B. to be written C. being written D. written
( )4. ________ is thought, he almost ran into the car in front of him.
A. Losing B. Having lost C. Lost D. To lose
( )5. _______ the general state of his health, it may take him a while to recover from the operation. A.Given B.To give C.Giving D.Having given
( )6. _______ such heavy pollution already, it may now be too late to clean up the river. A. Having suffered B. Suffering C. To suffer D. Suffered
( )7. The researcher is so designed that once ________ nothing can be done to change it.
A. begins B. having begun D. beginning D. begun
( )8. ________ in 1636, Harvard is one of the most famous universities in the United States.
A. Being founded B. It was founded C. Founded D. Founding
( )9. When ________, the museum will be open to the public next year.
A. completed B. completing C. being completed D. to be completed
( )10. Prices of daily goods ________ through a computer can be lower than store prices.
A. are bought B. bought C. been bought D. buying
( )11. Don’t use words, expressions, or phrases ________ only to people with specific knowledge. A. being known B. having been known C. to be known D. known
( )12. Unless ________ to speak, you should remain silent at the conference.
A. invited B. inviting C. being invited D. having invited
( )13. Friendship is like money: easier made than ______.
A. kept B. to be kept C. keeping D. having kept
( )14. Mr. Smith, _______ of the ________ speech, started to read a novel.
A. tired; boring B. tiring; bored C. tired; bored D. tiring; boring
( )15. ________ time, he’ll make a first-class tennis player.
A. Having given B. To give C. Giving D. Given
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(Key: 1-5 ADDCA 6-10 ADCAB 11-15 DAAAD)
