Some of the students are not sure ___ spelling the word, while others are not sure ___ the use of some grammatical rules.
#28757
A
of… about
B
about…to
C
of…to
D
for….of
推荐题目
— _________, this math problem seemed quite simple to me, but when I tried to work it out, I just couldn’t.— There are always things like this, I think.
#27613
A
On one hand
B
In my opinion
C
At first sight
D
On its own
If a television or radio breaks the new rules, it is forbidden to screen advertisements and the officials ______ face serious punishment.
#25557
A
in place
B
in order
C
in advance
D
in charge
Don’t forget to turn on your radio at 7 p.m. this evening. We’ll be back _______ then.
#26779
A
in the air
B
by air
C
on the air
D
off the air