8. On many occasions it is necessary and important to        (遵循常規(guī)/慣例) .

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5. 你方便的話,請在六點鐘來。

Please come at six if        you. (convenient)

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13. When he returned,he found his house        (強行闖人) .(break into)

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4. A s        world is essential to economic growth.

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3. I'm sorry I have to        (掛斷電話) now; there is another call for me.

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5. 我們生活在一個更強大、更和諧的國家里的日子就要到來了。

we will live in a more powerful and more harmo?nious country,        (the day is coming when)

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2. The result of this survey must be dealt with        (caution) .

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5. You're really m        that drinking a little won't influence driving and you won't be punished.

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2. Unless I am invited,I won't attend his birthday party.

—I won't attend his birthday party         .

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