Mr． Brown is ill in hospital． His________ /ˈdɔ：tə/ looks after him day and night．（ ）
A．dancerB．doctorC．dentistD．daughter
We are glad_____that traditional Chinese medicine can work wonders in preventing some diseases．（ ）
A．knowB．to knowC．knowing
A Chinese survey team reached the top of Mount Qomolangma_____May 27th，2020，which will improve human knowledge of nature and scientific development．（ ）
A．atB．onC．in
_______your smartphones， and read for at least 30 minutes，every day! You know，reading helps us to deepen our spiritual world．（ ）
A．Put awayB．To put away
C．Putting away
﹣What happened to Mrs．Smart？
﹣She cut herself while she______lunch．（ ）
A．preparesB．is preparing
C．was preparing
The twins are so alike that even their father finds______hard to tell them from each other．（ ）
A．itB．himC．them