It is impolite you to ring off when others haven’t finished their talking on the phone.
#26299
A
for
B
from
C
to
D
of
推荐题目
Scientists are convinced _____the positive effect of laughter _____physical and mental health．
#26778
A
of ;at
B
by; in
C
of ; on
D
on ;at
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
She is organized, friendly to people, hard-working and clever. _______, I can’t speak too highly of her.
#26991
A
In other words
B
In a word
C
As a result
D
In addition