Experts have been warning___of the health risks caused by passive smoking.
#28210
A
at a time
B
at one time
C
for some time
D
for the time
推荐题目
His explanation can’t be accepted   satisfactory.
#28112
A
as being
B
like being
C
as having
D
like
She was __ after the long walk.
#28058
A
out of breathe
B
breatelessly
C
out of breath
D
having no breath