题目内容

It was ____ that she couldn’t finish it by herself.

A. so difficult a work
B. such a difficult work
C. so difficult work
D. such difficult work

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Most animals have little connection with animals of a different kind, ________ they hunt them for food.

A. if
B. while
C. unless
D. As

Hard working though he was, ________ there was never enough money to pay he bills.

A. /
B. and
C. but
D. Therefore

________ water is to fish, so air is to man.

As if
B. if
C. As
D. Although

Much hard ________ he tried, he failed to catch up with the first runner.

A. although
B. as
C. while
D. When

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