21. The twins are so alike that even their father finds ______ hard to tell them from each other. （ ）
A. it B. him C. them
22. --- What happened to Mrs. Smart? （ ）
---She cut herself while she ______ lunch.
A. prepares B. is preparing C. was preparing
23. ______ your smartphones, and read for at least 30 minutes, every day! You know, reading helps us to deepen our spiritual world. （ ）
A. Put away B. To put away C. Putting away
24. A Chinese survey team reached the top of Mount Qomolangma ______ May 27th, 2020, which will improve human knowledge of nature and scientific development. （ ）
A. at B. on C. in
25. We are glad ______ that traditional Chinese medicine can work wonders in preventing some diseases. （ ）
A. know B. to know C. knowing
26. ______ you have problems, just let me know. I'll always be there for you. （ ）
A. However B. Whatever C. Whenever
27. The film My People, My Country, which amazed lots of movie-goers, ______ to the top of the Chinese box office last Monday. （ ）
A. jump B. jumped C. jumps
28. ______ the outbreak of COVID-19 is a terrible blow to the country, the government is trying hard to bring the situation under control. （ ）
A. Although B. If C. Unless
29. The school offers two courses on computer technology. One is for beginners and ______ is for those who already have some basic knowledge. （ ）
A. other B. another C. the other
30. Laura, someone is ringing the doorbell. Go and see ______, please. （ ）
A. who is he B. who it is C. who is it
A. it B. him C. them
22. --- What happened to Mrs. Smart? （ ）
---She cut herself while she ______ lunch.
A. prepares B. is preparing C. was preparing
23. ______ your smartphones, and read for at least 30 minutes, every day! You know, reading helps us to deepen our spiritual world. （ ）
A. Put away B. To put away C. Putting away
24. A Chinese survey team reached the top of Mount Qomolangma ______ May 27th, 2020, which will improve human knowledge of nature and scientific development. （ ）
A. at B. on C. in
25. We are glad ______ that traditional Chinese medicine can work wonders in preventing some diseases. （ ）
A. know B. to know C. knowing
26. ______ you have problems, just let me know. I'll always be there for you. （ ）
A. However B. Whatever C. Whenever
27. The film My People, My Country, which amazed lots of movie-goers, ______ to the top of the Chinese box office last Monday. （ ）
A. jump B. jumped C. jumps
28. ______ the outbreak of COVID-19 is a terrible blow to the country, the government is trying hard to bring the situation under control. （ ）
A. Although B. If C. Unless
29. The school offers two courses on computer technology. One is for beginners and ______ is for those who already have some basic knowledge. （ ）
A. other B. another C. the other
30. Laura, someone is ringing the doorbell. Go and see ______, please. （ ）
A. who is he B. who it is C. who is it
