The outbreak of Covid-19 has meant an _____ change in our life and work.
A.absurd B.abrupt C.allergic D.authentic
If I hadn’t been faced with so many barriers, I _____where I am.
A.won’t be B.wouldn’t have been C.wouldn’t be D.shouldn’t have been
There will still be lots of challenges if we are to _____ garbage in a short time.
A.clarify B.justify C.satisfy D.classify
Instead of getting down to a new task as I _____, he examined the previous work again.
A.had expected B.have expected C.would expect D.expect
It is not a problem _____ we can win the battle; it’s just a matter of time.
A.whether B.why C.when D.where
Building such a bridge over the bay was ______ but the local government made it within two years.
A.a wet blanket B.a piece of cake C.a dark horse D.a hard nut to crack
