单项选择题

______ we have all the materials ready, we should begin the new task at once.

A. Since that
B. Since now
C. By now
D. Now that
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单项选择题
If it ______ Professor Russel standing up for him, he would have had to leave.
A. hasn’t been for
B. hadn’t been for
C. was for
D. were for
单项选择题
Several experts have been called in to plan ______ for boating, tennis, refreshments and children’s games in the projected town park.
A. equipment
B. instruments
C. implement
D. facilities
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