42___________.

【名词&注释】

不定式(infinitive)

[单选题]42___________.

A. special
B. unusual
C. official
D. ordinary

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学习资料：

[单选题]20．

A. stood
B. sat
C. lay

[单选题]3． When I came into the room，he pretended ________ his homework．

A. to do
B. be doing
C. doing
D. to be doing

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