I was giving a phone call to my mum________ Jim asked me for help.
A.while B.before C.after D.when
________ you look after it carefully, this coat will keep you warm through the whole winter.
A.If B.Unless C.Before D.After
She is listening to music ________ Peter is doing his homework.
A.after B.before C.while D.unless
Our Chinese teacher didn’t go to bed ______ he finished his work last night.
A.if B.until C.since D.because
Chen Wei isn't at school today________ he is taking part in a robot competition in Shanghai.
A.after B.because C.before D.if
_______they may not succeed, they will try their best
A. Though B. When C. Because D. Unless
