These viruses, if in, can result in illness or even death.A. breathingB. breathedC. breat

发布时间：2020-08-17 01:45:34

These viruses, if      in, can result in illness or even death.
A. breathing
B. breathed
C. breathe
D. to breathe

网友回答

A. breathing
(答案→)B. breathed
C. breathe
D. to breathe
解析：考查状语从句的省略式，英语中如果主从句的主语一致，可以省略从句的主语和be动词，if breathed in=if these viruses are breathed，句意：如果被吸入，这些病毒会导致疾病或死亡。选B。
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