Paper books still play an important role in the US textbook market, with digital textbooks __________ less than 5 percent of the total.
#97580
A
composing of
B
making up
C
consisted of
D
accounted for
推荐题目
________ the meeting himself gave them a great deal of encouragement.
#89167
A
The president will attend
B
The president to attend
C
The president attended
D
The president's attending
We are so _______ to see the same thing every day. Can’t you show us something______?
#97362
A
boring; interesting
B
bored; interested
C
boring; interested
D
bored; interesting
If _____ to look after luggage for someone else, inform the police at once.
#91118
A
asked
B
to ask
C
asking
D
having asked
_______ with present work and life makes him very happy.
#90289
A
Content
B
Being content
C
Contented
D
Contenting
Air pollution, together with littering, ____ many problems in our large industrial cities today.
#96011
A
causes
B
cause
C
caused
D
causing