On January 29th, 2020, Zhong Nanshan and his team ___________ over four hours online ___________ five patients who were seriously ill, and made a treatment plan for those patients.
A.spent; checking B.spent; to check C.spend; checking D.spend; to check
--- Is that Mary over there?
--- It ___________be her. She has gone to Kunming.
A.may B.must C.can't D.mustn't
--It's 20 years since we came back to Liangshan.
--How time flies! We ___________ in our hometown for such a long time.
A.work B.worked C.has worked D.have worked
It's dangerous for us to give too much ___________about ourselves on the Internet.
A.messages B.suggestions C.preparation D.information
A lot of schools across China ___________ starting classes because of COVID-19.
A.put up B.put off C.put on D.put away
The Ninth Xichang Dragon Boat Race was held ___________June 9th last year. Many people watched it ___________TV.
A.in; on B.in; in C.on; on D.on; in
