There might be a massive black hole at the center of our galaxy______(swallow)up stars at a very rapid rate.
There might be a massive black hole at the center of our galaxy______(swallow)up stars at a very rapid rate.
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The Gadfly insisted that the work __________ be finished by the middle of June. A.mustB.couldC.shouldD.might
Please _____ your food slowly before _____ it.A. swallow / chewingB. chewing / swallowC. swallowing / chewD. chew / swallowing
5、后缀-our的语义和形容词性物主代词our是相同的，表示“我们的”。