介绍:
1．________ not to miss the flight at 15∶20，the manager set out for the airport in a hurry.
A．Reminding B．Reminded
C．To remind D．Having reminded
2．Dina，________ for months to find a job as a waitress，finally took a position at a local advertising agency.
A．struggling B．struggled
C．having struggled D．to struggle
3．________ the right kind of training，these teenage soccer players may one day grow into international stars.
A．Giving B．Having given
C．To give D．Given
4．________ many times，he finally understood it.
A．Told B．Telling
C．Having told D．Having been told
5．_______ by the advances in technology，many farmers have set up wind farms on their land.
A．Being encouraged B．Encouraging
C．Encouraged D．Having encouraged
6．________ 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
7．________ as the “First Lady of Speech”，Dr Lillian Glass is recognized as one of the world’s leading experts on communication skills.
A．Knowing B．Having known
C．Known D．To be known
8．________ in thought，he almost ran into the car in front of him.
A．Losing B．Having lost
C．Lost D．To lose
9．The research is so designed that once ________ nothing can be done to change it.
A．begins B．having begun
C．beginning D．begun
10．Generally speaking，________ according to the directions，the drug has no side effect.
A．when taking B．when taken
C．when to take D．when to be taken
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