【推荐1】I was doing my homework ______ my mother was cooking in the kitchen.

A．after

B．while

C．if

D．until

【推荐2】My parents gave red packets to my cousin every Spring Festival___________ she got a job, because she said she was able to make money.

A．after

B．when

C．until

D．since

【推荐3】The mobile phone has influenced people's life a lot ________ it was invented.

A．until

B．since

C．after

【推荐1】—Jerry, may I use your dictionary?
—Sorry, I’m using it now. But I’ll give it to you ______ I finish it.

A．before

B．as soon as

C．so that

【推荐2】________ you don’t wear medical masks (医用口罩) and go to some dangerous places, you will be infected (被感染) with COVID-19.

A．Before

B．If

C．After

D．When

【推荐3】—Because of the Double Reduction Policy（双减政策）, students don’t have any homework ________ they come back home.
—Sure. As a mother of a student, I don’t feel so tired as before.

A．before

B．while

C．after

【推荐1】He has been running______.

A．since two hours	B．for two o’clock
C．two hours ago	D．for two hours

【推荐2】—Jane is lucky to have got the well-paid job.
—Yes, ________she is young and has little experience.

A．as

B．unless

C．though

D．since

【推荐3】Only four days remained ____ the exam.

A．at

B．after

C．before

D．since

【推荐1】— You hurt your right leg? How did that happen?
— Bad luck! I was walking along the road           an e-bike hit me from behind.

A．while

B．as

C．when

D．before

【推荐2】The manager of the hotel was waiting at the gate _______ the guests arrived.

A．while

B．when

C．unless

D．after

【推荐3】-- Our dreams won’t come true __________ we know what our dreams are.

A．after

B．unless

C．while

D．since