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
 Tell me when you ______ at the airport, Alice. I’ll go there to meet you if I’m free.
#100118
A
arrive
B
would arrive
C
have arrived
D
are arriving
The dish _____ nice, but the milk _____ sour.
#103726
A
is smelt, is smelt
B
is smelt, smells
C
smells, is smelt
D
smells, smells