单项选择题

(At) school Li Ming ran (into) many problems, such as (choosing) classes and (to handle) his time.

A．A
B．B
C．C
D．D
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单项选择题
(In Hawaii), people are (friendly) and always warmly welcomed visitors.
A．A
B．B
C．C
D．D
单项选择题
This (equipment) is (based upon) advanced (techniques) and it is (highly reliable).
A．A
B．B
C．C
D．D
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