We students should do everything we can________ COVID-19(新型冠状病毒).
A.prevent B.to prevent C.preventing
—Can you tell me ________ last night?
—Yes. She felt tired, so she stayed at home all night.
A.why didn’t Helen come to the party
B.when Helen went to the party
C.where Helen was
________ special classes we had! We have learned a lot about paper cutting.
A.What a B.How C.What
Jin Yong, the master of wuxia, died at 94 years old ________Oct. 30th, 2018 in Hong Kong.
A.in B.on C.at
He has never been to Beijing, ______?
A.hasn't he B.has he C.doesn't he
Everyone in my class except Tom and Mary to Beijing.
A. have been
B. have gone
C. has been
