when we do exercise,we must be____ .A as we can as careful.B as we can as carefullyC as careful as we canD as carefully as we can原因 谢

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whenwedoexercise,wemustbe____.Aaswecanascareful.BaswecanascarefullyCascarefulaswecanDascarefullyaswe

when we do exercise,we must be____ .A as we can as careful.B as we can as carefullyC as careful as we canD as carefully as we can原因 谢
when we do exercise,we must be____ .
A as we can as careful.
B as we can as carefully
C as careful as we can
D as carefully as we can
原因 谢

when we do exercise,we must be____ .A as we can as careful.B as we can as carefullyC as careful as we canD as carefully as we can原因 谢
be as adj as sb can,因为careful和 be 对应啊!

D
用副词修饰动词, do exercise carefully ( B, D)
as... as 中间用原级

C 动词是系动词BE,故用形容词,AS+形容词/副词+AS

C 要用形容词作表语be careful