Sales of CDs have greatly increased since the early 1990s, when people_____to enjoy the advantages of this new technology.
#104613
A
begin
B
began
C
have begun
D
had begun
推荐题目
Many accidents________ by careless drivers last year.
#100142
A
are caused
B
were caused
C
have caused
D
will cause
You to like the subject after you it for some time.
#102481
A
will get; have studied
B
will get; will study
C
got; have studied
D
get; will study
－Have you moved into the new house?－Not yet. The rooms .
#102689
A
are painted
B
are painting
C
are being painted
D
are being painting
It is expected that in the near future, more advances in the Internet technology________by German scientists.
#99684
A
are making
B
are made
C
will make
D
will be made
According to the survey, two thirds of the area__________covered by trees now and 90% of the population__________contributions to the Greening Project in the city.
#102395
A
is ; has made
B
are; have made
C
is; have made
D
are; has made