Great changes in every field _____ in the last ten years. 
#99202
A
take place
B
took place
C
have taken placed
D
had taken place
推荐题目
— Isn’t it amazing that I met Francis at the Christmas party?—Really?For how many years ____ each other?
#99541
A
didn’t you see
B
haven’t you seen
C
hadn’t you seen
D
don’t you see
—Bob, you______ on the phone.   —______. 
#104322
A
areneeded;I'mcoming
B
arewanted;Coming
C
arecalled;I'llcome
D
arerungup;Thanks
Betty will ring me up as soon as she ______ in Beijing.
#101706
A
arrive
B
arrives
C
arrived
D
will arrive