连词成句。

1. school, work, I, at, hard (.)

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2. with, family, lunch, I, my, eat (.)

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3. go, school, I, at, 7: 30, to, morning, the, in (.)

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4. weather, the, how, today, is (?)

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5. is, it, time, what (?)

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1978—2007年世界货物贸易进出口总额增长了：

A．9.33倍
B．980%
C．254440亿美元
D．243440亿美元