The castle ________ the 14th century.

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Don't read such books ________ you can't understand.

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My father had me ________ the house the whole afternoon.

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Because of the rain, we'll have our P. E. class in the classroom ________ the playground.

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What are they thinking of ________ their classes lively and interesting?

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－The light in the office is still on.

－Oh, I forget ________.

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________ you understand the rule, you will find it easy to keep it.

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The chicken my mother cooked ________.

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He asked me ________.

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A．which school was I last year

B．which school was I at last year

C．which school I was last year

D．which school I was at last year

Last evening I did nothing but ________ my farm tools.

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