. Sales of CDs have greatly increased since the early 1990s, when people ________ to enjoy the advantages of this new technology.
#104797
A
begin
B
began
C
have begun
D
had begun
推荐题目
I am decorating my office now. I _______ comfortably in my office at this time tomorrow.
#100947
A
am sitting
B
was sitting
C
sit
D
will be sitting
The snow _____ to end at midnight and change to rain in the east as warm air is pushed in by dawn Monday.
#101719
A
is expecting
B
is expected
C
has expected
D
had been expected
Tony ____ for the company as an engineer for two decades. Now he teachesmechanics m Peking University.
#100416
A
has worked
B
worked
C
is working
D
had worked
Jack as well as the other students who ______ sent abroad by the government ______ brought up in a small town.
#102269
A
were/was
B
was /was
C
was / were
D
were/were
I have got four day's holiday to Paris. I _______ my father.
#99523
A
am taking
B
had taken
C
took
D
have taken