题目内容
【题目】— What did your sister _____ in the study?
— She _____her homework.
A.did; do
B.do; did
C.did; did
【答案】B
【解析】疑问句里含有助动词did，后面的行为动词要使用原形。
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题目内容
【题目】— What did your sister _____ in the study?
— She _____her homework.
A.did; do
B.do; did
C.did; did
【答案】B
【解析】疑问句里含有助动词did，后面的行为动词要使用原形。