问题
Vehicle designers are well aware that they need to ______ the idea of cars that have a low environmental impact.
A:end up with
B:put up with
C:keep up with
D:come up with;
B:put up with
C:keep up with
D:come up with;
正确答案是：
同类题型
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n’t like coffee _____tea, but water．
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Will you read me a story，Mummy?-OK．You ________ have one if you go to bed as soon as possible[ ]