题目内容

One of the station staff saw her in difficulty and came to her _____________.

A. aid
B. hand
C. place
D. set

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He ___________ the guard some money and got into the forbidden building.

A. slipped
B. skid
C. stripped
D. stopped

My sister-in-law ____________ a healthy girl last night and the whole family were thrilled to welcome the new member.

A. lived
B. did
C. delivered
D. labored

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什么是NAT?什么是NAPT?

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