【单项选择题】
When we write, we must write as（）as we can.
A、A.careful
B、B.carefully
C、C.more careful
D、D.more carefully
查看正确答案
A、A. When we are playing basketball. B、B. When we are making a speech. C、C. When we are having a party. D、D. When we are talking with somebody.
