Water is __________ (必要的) to maintain life, but only one percent of the water on the whole planet can be used for drinking.
A. essential
B. important
C. clear
D. obvious
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The channel was ________ funded by the French and the British.
A. jointly
B. joint
C. join
D.joinly
Many people don't like to ___________in stocks.
A. investor
B. investment
C. investing
D. invest
He hasn't got the _____________ to run a farm.
A. know-what
B. know-when
C. know-how
D. know-why
The company had a_________ of $3.8 million.
A. turnup
B. turndown
C. turnover
D. turnon
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