unless I work out this problem .I won`t relax.(同义 ___ I ___ work out this problem .I won`t relax.if ```` not ``````是什么含义的？请问下

unless I work out this problem .I won`t relax.(同义 ___ I ___ work out this problem .I won`t relax.if ```` not ``````是什么含义的？请问下 I don't think you can work out the maths probiem ( )the teacher's help.选项有A.since B.unless C.because D.without 一道英语单选题,I didn't manage to work out the problem( )the teacher had explained how.A.until B.unless C.when D.before为什么呢? l won't work out the problem the teacher helps me中间添 unless 还是 if We must the useful books from the unless ones A pick out B bring out C sort out D work out 英文翻译：I can work it out. I can work out this question e_____. I believe everything will be work out! I need to get the work out Would you like to see a moviw with me tomorrow?Well ,I won't go out with you ,___I finish my work请问填until还是unless还是都可以?为什么 I just can't get her out of my mind,...unless I bang her...rt I can spell a word out——I read it out.A when B though C unless ——Do you know how to work out this problem?——Give me some more time.I think i am abl——Do you know how to work out this problem?——Give me some more time.I think i am able to _____ a good idea.A.think of B.worry about C.think about D.th I can't finish my work unless you help me 的同义句 work out work out 英语单项选择,并说明选择理由13.You won’t pass your exams_______ you work harder.A.when B.if C.unless D.after14.— I’m sorry I’m late.—_______.But don’t be late next time.A.All right B.You’re welcome C.It doesn’t matter D.Th I an sad but i will work out