题目内容
(请给出正确答案)
[单选题]
() they went on the tour, they booked their air tickets.
A.While
B.In spite of
C.After
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A.While
B.In spite of
C.After
A.went over
B.went out
C.went in for
D.went all out
A.occasionally
B.frequently
C.hard
D.gradually
A.wore
B.had on
C.put on
D.was dressed
A.When the problem was solved
B.When the problem solved
C.The problem solved
D.The problem is solved