With the fast development of computer and Internet technologies, traditional printed books ______ by the growing popularity of online reading of e-books.
#101859
A
are challenged
B
have challenged
C
are being challenged
D
have been challenged
推荐题目
— You look tired.— Yes. I ___ non-stop until 8 o’clock.
#102862
A
had worked
B
work
C
have worked
D
was working
The key you have just got the front door.
#102563
A
is used to opening
B
is used to be opened
C
is used to being opened
D
is used to open
— Why are the Woods selling their belongings?— They to another city.
#102571
A
had moved
B
have moved
C
moved
D
are moving
If you stick to it, this plan ______ that your company is well prepared to deal with future challenges.
#100867
A
ensured
B
will ensure
C
ensures
D
would ensure
----Why didn’t you tell me about the meeting? ----I ______ tell you the day before yesterday. You just forget it.
#103644
A
do
B
did
C
had to
D
must