(2019原创)Jenny didn't go to bed ________ her mother came home last night.
A.though B.if C.while D.until
(2019原创)Find ways to get on well with your classmates, ________ you will get yourself very lonely.
A.but B.so C.and D.or
(2019原创)________ summer ends and autumn comes, the days get shorter and shorter.
A.If B.As C.Though D.Before
(2019原创)I'd like to go with you, ________ I have many other things to do.
A.and B.but C.or D.so
(2019原创)All students were doing their DIY work ________ the teacher came in.
A.when B.since C.before D.after
(2018邯郸二模)You must treat your school work seriously ________ you want to go to the key senior high school.
A.unless B.if C.though D.because
