I must make up the lesson ________ I missed last week.

[　　]

I don't know the reason __________ you were absent from the meeting, but I'm sure that someone will tell me the reason _________ you haven't told me.

[　　]

Only Timmy and his brother Jimmy at home, ___________ to their grandparents'.

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The number of people invited __________ fifty, but a number of them __________ absent for different reasons.

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Seeing the sun _______ above the surface of the sea, we let out a shout of joy.

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The workers are ____________ for their quick work.

Which of the following is not RIGHT?

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________ is known, the animals in the zoo are well fed.

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There are __________ of students in our school who will go to Shenzhen for the summer camping. _________of the students ___________ about 300.

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A．a great number,The number,is

B．the number,A number,are

C．numbers,The numbers,is

D．a number,a number

The doctor _____________ is leaving for Africa next month.

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Mike's car has a flat tire. ___________ now is to walk to the nearest pay phone.

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