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學(xué)校即將舉行以“Turning a Bad Mood（心情）into a Good One ”為題目的英語(yǔ)作文比賽，請(qǐng)按下列要求定一篇100詞左右的文章。

1. 好心情的重要性。 2. 產(chǎn)生壞心情的原因。 3. 應(yīng)該如何調(diào)整心情。

_____ to nuclear radiation, even for a short time, may produce variants (變異體) of genes in human bodies.

A. Exposed B. Being exposed

C. Having exposed D. After being exposed

The driver _____ for the accident had not been driving carefully.

A. blamed B. being blamed

C. to be blamed D. blaming

It was announced that only when the fire was under control ____ to return to their homes.

A. the residents would be permitted

B. had the residents been permitted

C. the residents had been permitted

D. would the residents be permitted

One way to understand thousands of new words is to gain _____ good knowledge of basic word information.

A. 不填 B. a C. the D. one

______ some pennies , I think there are only nine pounds left in my pocket.

A. In addition B. Instead of

C. Rather than D. Apart from

Two dresses look similar _____ each other , but they differ _____ material

A. to; in B. with; from C. to ; from D. from; in

The little boy sat _____ to his father, and listened ____ with great interest

A. close; close B. closely; close

C. close; closely D. closely; closely

I feel uncomfortable each time I remember the situation _____ Mary didn’t agree with me _______ the matter.

A. that; at B. where; over

C. which ; about D. where; to

---How long do you think it’ll be _____ I can go back to work?

--- Well, you’ll be feeling much better by next weekend.

A. before B. when C. until D. that