单项选择题

Can you ______ any smell of the gas which is escaping

A．discover
B．detect
C．find
D．spot
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单项选择题
The republication of the poet's most recent works will certainly ______ his national reputation.
A．magnify
B．strengthen
C．enlarge
D．enhance
单项选择题
When Mr. Green was away on business, his neighbor gave his wife a(n) ______ with the housework.
A．aid
B．help
C．hand
D．lift
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