问题
_________ should your robot need_________ batteries?–Every two months.[ ]
A: How soon, to be changed
B: How long, to change
C: How much, change
D: How often, to change
B: How long, to change
C: How much, change
D: How often, to change
正确答案是:
同类题型
Do you know the person with __________ he always chatted online?—Yes, one of his QQ friends.
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_______wonderful advice you have just _______me!
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Look! Is that Mr. Green?—It be Mr. Green. He has gone to Shanghai.