She thought she heard ________ fall on the floor, so she got up to take a look.

A.everything B.nothing C.anything D.something

China has become one of ________ countries worldwide in greening the desert.

A.more successful B.the most successful C.more successfully D.most successfully

Underground lines make people go out ________ than before.

A.convenient B.conveniently C.more conveniently D.most conveniently

Zhang Wenhong ________ as a doctor in Huashan Hospital since he graduated from college.

A.works B.worked C.has worked D.is working

The delivery man promised that he ________ my takeout(外卖) very soon.

A.will deliver B.would deliver C.are delivering D.were delivering

You are not allowed to take a bus _________ you wear a mask (口罩).

A.unless B.when C.if D.because

Don’t stay up too late, ________ you’ll find it hard to get up on time tomorrow.

A.and B.or C.but D.so

Most of Jeff’s best books ________ when he was sick and poor.

A.wrote B.would write C.had written D.were written

Anna's parents always encouraged her ________ questions while she was having remote (远程) lessons.

A.raise B.raising C.to raise D.raises

Remember to avoid ________ your eyes, nose and mouth before washing your hands.

A.touch B.touched C.to touch D.touching