问题
Things made of plastic are usually _______, but they are _______ to get polluted.
A:cheap; easy
B:cheap; easier
C:cheaper; easy
D:cheaper; easier
B:cheap; easier
C:cheaper; easy
D:cheaper; easier
正确答案是：
同类题型
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__________ bottles of coke are there on the table ? ——Three.
If Nancy __________ the exam, she will go to the USA for English study.
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