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You don't have to go out to buy__hamburger,since the fast-food restaurant
dedelivers free of__charge A a,a B the;the C不填;不填 D a;不填
人气:327 ℃ 时间:2019-10-26 02:52:50
解答
d,hamburger是可数名词,前面要加冠词,但它不是特指所以用a,而free of charge是固定搭配
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