The teacher told the children, “It's very important _____ careful _____ fire.”
A. to be; with
B. is; with
C. being; with
D. to be; to
正确答案:A
The teacher told the children, “It's very important _____ careful _____ fire.”
A. to be; with
B. is; with
C. being; with
D. to be; to
正确答案:A
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