The doctor must be _______ 24 hours a day, 7 days a week in the boarding school.
#25574
A
on call
B
by hand
C
in sight
D
on spot
推荐题目
.Slang words (俚语) are made _____ special groups,such as workers and musicians.
#27381
A
of
B
into
C
from
D
by
Many people are ________ as to what to do when there is a fire.
#25677
A
at a loss
B
at risk
C
at ease
D
at a distance
She owes her success________good luck more than ________ability.
#26494
A
to；and
B
of；to
C
to；to
D
to；in
the numbers in employment, the hotel industry was the second largest industry in this country last year.
#26559
A
In spite of
B
ln case of
C
In terms of
D
In praise of