We need time to inform ourselves thoroughly_____a strong business model.
A. to
B. of
C. on
D. about
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The salesman played his part_____than we had thought he would.
A. successfully
B. more successfully
C. most successfully
D. more successful
Although he couldn't find the right modeland get the sales strategy right,he insisted ____havinga try.
A. to
B. on
C. at
D. for
They regard ____as their duty to keep every workshop clean.
A. this
B. what
C. it
D. that
Not until last Monday ___to this plan.
A. the manager agreed
B. does the manager agree
C. the manager agrees
D. did the manager agree
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