单项选择题

Our boss, Mr. Thompson, （） a raise in salary for ages, but nothing has happened yet.

A. was promising
B. has been promising
C. promised
D. has promised

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单项选择题
2（）

A.up
B.on
C.over
D.on
单项选择题
Factories are supplied with （） machines.

A. plenty of
B. a great deal of
C. large number of
D. vast amounts of
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