单项选择题

It was not until I () your letter that I() all about the matter.

A.have read; knew
B.would read; had known
C.read; had known
D.had read; knew

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单项选择题
A lot of problems concerning education fee () at the conference.

A.came out
B.turned up
C.came up
D.steeled down
单项选择题
Please take your () things--money, jewelry, cameras and so on with you when you go out of the hotel.

A.expensive
B.worthy
C.precious
D.valuable
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