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
Henry works as a teacher now, but he ______ on a farm for three years.
#101652
A
has worked
B
had worked
C
worked
D
had been working
----We’ve spent too much money recently.-----Well, it isn’t surprising .Our friend and relatives around all the time.
#102029
A
are coming
B
had come
C
were coming
D
have been coming
—Where have you been recently? —I ________ in Hangzhou on business for a week last month.
#104528
A
have been
B
was
C
had been
D
had gone
－What do you think of store shopping in the future?－Personally, I think it will exist along with home shopping but ______.
#101481
A
will never replace
B
would never replace
C
will never be replaced
D
would never be replaced
Many kinds of help ________ by plane or by train to the area ever since the earthquake hit it.
#103062
A
had been offered
B
have been offered
C
are offered
D
were offered