单项选择题

Trees（）themselves by seeds.

A. cultivate
B. grow
C. enrich
D. propagate

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单项选择题

Diana made a lot of effort to persuade her parents into（）to her going to the United States to study business administration in MIT.

A. contending
B. contesting
C. contenting
D. consenting

单项选择题

The university board of trustees deemed it urgent that a new provost（）to replace Mr Dannison who had been diagnosed with cancer．

A．be selected
B．should be selected
C．must he selected
D．was selected

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