(2020原创)I need your help to pick out a shirt for me, the black one ________ the white one?
A.or B.so C.and D.but
(2019河北省保定市莲池区二模)She didn't go to swim ________ she finished her homework.
A.while B.when C.until D.before
(2019承德县一模)It's polite to avoid making noise ________ you're eating.
A.unless B.until C.after D.when
(2019石家庄41中一模)I didn't pass the exam ________ I worked hard.
A.since B.unless C.though D.whether
(2019石家庄44中二模)He ate a lot and did little exercise ________ he gained 10 pounds in a month.
A.but B.or C.and D.so
(2019石家庄40中二模)Mr.Smith didn't give us a lecture ________ he was ill in bed.
A.until B.though C.because D.unless
