单项选择题
When Pilot Office Peter Thwaites was away on business, his neighbour gave his wife ______ with the housework.
- A．an aid
B．a help
C．a hand
D．a lift
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单项选择题
We won't encourage him to do that ______ he is in good health.
A．even if
B．in case
C．even though
D．when -
单项选择题
A dictionary of English language, ______ by Dr Samuel Johnson, was the first real attempt as a systematic and interestingly written survey of English usage.
A．constructed
B．composed
C．compiled
D．collected -
单项选择题
When our university laboratory bought this microscope we were given a one year's ______.
A．reservation
B．security
C．proof
D．guarantee
