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 I’m looking for an electric can opener____ also can sharpen knives.

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Cathy is trustworthy. She’s a person on____ you can always depend.

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_____ are you going to the zoo? Tomorrow.

Scientists believe that this pyramid was built ___________  a period of 10 to 20 years.

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All the people____ have gone into the room are still young.

Don’t forget _____ off the lights before going out.

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We saw the girl______ you say is beautiful.

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 There______ available in his area of specialization.

 Helen sounded______when I talked to her.

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The fairy_____ a jade bowl into the sea.

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_____ in a mosquito-net.

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She couldn’t come to the party, ____ was perfectly true.

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A majority of the TOEFL tests ______ difficult.

In order not to get lost, we need a ____________.

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Jill isn’t on the phone, ____ makes it difficult to contact her.

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Wasn’t it her family_____ emigrated to Australia?

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_____ girl won the beauty competition?

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“Professors Allen’s class is the best I have ever been to”.

          “I think it’s_____”.

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 _____ in large quantities is not necessarily an indication of its quality.

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Everyone urged that Bill_____ his education.

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About 60% of students in this class ______ from China.