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With online course Crazy English has over 20 million students all over China          the class through the Internet .

   A. attend B. attended    C. attending   D. to be attending

C


解析:

本題考查have sb do/doing;have sth done的用法區別。have sb do 讓某人做某事,have sb doing,讓某人處于某種狀態,have sth done讓別人做某事。故選C。

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Mail carriers will be delivering some good news and some bad news this week.

The bad news: Stamp prices are expected to rise 2 cents in May to 41 cents, the Postal Regulatory Commission announced yesterday. The good news: With the introduction of a “forever stamp,” it may be the last time Americans have to use annoying 2-or-3-cent stamps to make up postage differences.

Beginning in May, people would be able to purchase the stamps in booklets of 20 at the regular rate of a first-class stamp. As the name implies, “forever stamps” will keep their first-class mailing value forever, even when the postage rate goes up.

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