(2020原创)I don't have any experience in this task ________ I come here. I am a green hand.

A.if B.unless C.before D.while

(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

(2019邵阳改编)Let's go climbing Langshan Mountain this Saturday ________ the weather is fine.

A.though B.if C.unless D.because

(2019天津改编)She was tired, ________ she continued her work.

A.so B.and C.but D.or

(2019盐城改编)I've wanted to read Peter Pan for long, ________ today I finally borrowed the book from the library.

A.or B.but C.and D.so