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
It’s said that a car accident_____________on the highway this morning.
#104050
A
happens
B
happened
C
was happened
D
has been happened
The novel written by the author ________ best, but five years ago no one could have imagined how great a role he ________ in the literary world.
#99610
A
sells; was to play
B
was selling; was playing
C
sold; had played
D
is sold; is playing
Do you know when Mr. Brown _______? When he _______ , please let me know.
#101257
A
will come; will come
B
comes; is coming
C
is coming; comes
D
comes; will come
Mum，you really need to have a rest！You ________in the kitchen ever since you came back home three hours ago.
#99412
A
had worked
B
were working
C
have been working
D
worked
—Hey ,it’s you, Jackie! I didn’t think you could be here．—A big surprise ,right? I _______ for you all the afternoon．
#100196
A
have waited
B
was waiting
C
have been waiting
D
waited