Magnum Plus cameras______very popular right now because they are so easy to use.

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问题 Magnum Plus cameras______very popular right now because they are so easy to use.

选项 A、became
B、are becoming
C、to become
D、becomes

答案B

解析 right now意为“现在”,可以考虑用一般现在式和现在进行式。(A)became是become的过去式,与句子的时态不符。(D)句子的主语是复数(cameras),故第三人称单数形式不正确。
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