【題目】My father ____ in a panda protection center for 10 years, so he knows a lot about panda.

A. was workingB. is workingC. has workedD. will work

【答案】C

【解析】

句意:我爸爸在一家熊貓保護(hù)中心工作了10年了,因此他對熊貓很了解。was working過去進(jìn)行時的結(jié)構(gòu); is working現(xiàn)在進(jìn)行時的結(jié)構(gòu);has worked現(xiàn)在完成時的結(jié)構(gòu);will work一般將來時的結(jié)構(gòu);根據(jù)for 10 years可知用現(xiàn)在完成時;故選C

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