第1个回答 2012-10-05
We should try our best to learn English well.
We should do our best to learn English well。
Weshouldtry ourbest to studyEnglish best。
都可以的。
第2个回答 2012-10-05
We have to try our best to learn English well.
第3个回答 2012-10-05
We should try our best to study English well.