问题描述：
finishing your homework on time isn't what you______,but what you _______.
Finishing your homework on time isn't what you______,but what you _______.
A.should do ;had better do B.had better do;ought not do
C.had better do;ought do C.should ;had better not do
选什么?为什么?
Finishing your homework on time isn't what you______,but what you _______.
A.should do ;had better do B.had better do;ought not do
C.had better do;ought do C.should ;had better not do
选什么?为什么?
问题解答：
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