单项选择题

If you want to______ a pleasant visit, find out as much as possible about the manners and customs of your country.

A．secure
B．assure
C．insure
D．ensure
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单项选择题
Your advice would be______ valuable to him, who is at present at his wit's end.
A．exclusively
B．extensively
C．excessively
D．exceedingly
单项选择题
In the United States as well as in China, only children tend to be______ by their grandparents.
A．spoiled
B．injured
C．damaged
D．wounded
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