Emergencies and unexpected situations happen all the time.
A. may B. can C. must D. should
While watching television, .
A. the doorbell rang B. the doorbell rings
C. we heard the doorbell ring D. we heard the doorbell rings
The rising frequency for smoggy days puts me into deep that maybe one day citizens will have to rely on masks to survive.
A. doubt B. worry C. shock D. faith
The report has found that more and more Chinese have an American or British temporary visa for holiday spending in recent years.
A. stood for B. applied for
C. accounted for D. searched for
downloading of large numbers of apps is one of the most risky behaviors someone with a smartphone can engage in.
A. Cautious B. Public C. Random D. General
As city boy accustomed to the concrete building, streams of vehicles and skies of smog, I found farm life “eye-opening” experience.
A. the; a B. the; an
C. a; the D. a; an
