A.正确
B.错误
第3题
I’m a business trip for APEC summit, sir.
A、on
B、for
C、in
第4题
What type of travel was booked?
A.A business trip
B.A vacation
C.A group tour
D.A study trip
第6题
Li Ming is said ______ in Beijing, but I don't know which hotel he stays in.
A.to be on a business trip
B.to have been on a business trip
C.to on a business trip
D.to being on a business
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