What a pity! My new computer__________ a virus and it can't work now.
A.catches B.caught C.is caught D.has caught
—Do you go to school by bike every morning?
— Yes, _________it rains heavily.
A.because B.as C.unless D.if
—Can we chat in the library?
—I'm afraid not. We should keep _________.
A.healthy B.clean C.quiet D.warm
—Your sister is very good at cooking! How did she learn it?
— She learnt it by _________.
A.yourself B.you C.herself D.her
—________is it from our school to your home?
— It's about 20 minutes' ride.
A.How long B.How much C.How often D.How far
At present, people all over the world are fighting _________ COVID-19(新冠肺炎). We believe humans will win soon.
A.to B.for C.against D.with
