如题所述
第1个回答 2015-08-29
Unless you study hard, you can't pass the exam.本回答被提问者采纳
第2个回答 2015-08-29
You won't pass the exam unless you study hard.
第3个回答 2016-12-24
Unless you study hard,or you con,t pass the exam.
第4个回答 2015-08-29
You can't pass the test unless you study hard.
第5个回答 2015-08-29
努力没用。还要坚持
