________, the damage would be incalculable.
A.Should such a disaster occur B.If such a disaster had occurred
C.Had such a disaster occurred D.If such a disaster should be occurred
It is highly recommended that the general public________one-metre social distance to avoid any possible risk of getting infected.
A.keep B.will keep C.must keep D.keeps
Last month L.A.declared a________of emergency as protests over killing of Geroge Floyd a black man turned violent.
A.state B.condition C.situation D.circumstance
______ providing entertainment, the website also turns out to be a helpful learning tool.
A.Far from B.Apart from C.Instead of D.Regardless of
Only when the circuit breaker mechanism was triggered________what a negative impact the epidemic had made on the country’s economy.
A.had they realized B.they realized C.they realize D.did they realize
In the process of getting rid of racial________,the USA is left far behind.
A.discrimination B.compromise C.substitute D.disadvantage
