Exercise:用今天所学单词的适当形式填空

Our hopes for a picnic was __1__by a heavy rain.

The boy is trying to__2__a scheme to earn more money during the vacation.

Exposure to radioactivity may make animals and plants __3__.

He made a(an) __4__that he would tell the truth and nothing but the truth.

She couldn’t open the door, even by__5__ all her strength
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