When you________, use a handkerchief to
问题:
When you________, use a handkerchief to cover your nose and mouth. This is particularly necessary in public places.
A.speak
B.whisper
C.sneeze
D.breathe
When you________, use a handkerchief to cover your nose and mouth. This is particularly necessary in public places.
A.speak
B.whisper
C.sneeze
D.breathe