问题

Many English learners find that ______ pronunciation helps them improve a lot.

A:contributing to
B:consisting of
C:taking control of
D:paying attention to;

正确答案是：

同类题型

The Qing Dynasty (AD1616-1911) had ten emperors altogether, nine _____ are buried in the two groups of tombs in Hebei Province.

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The computer system suddenly________ while he was searching for information on the Internet.

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