If nothing________,the oceans will turn into fish deserts.              (2013·湖南,26)
#99430
A
does
B
had been done
C
will do
D
is done
推荐题目
They became friends again that day.Until then,they_____to each other for nearly two years.
#104068
A
didn’t speak
B
hadn’t spoken
C
haven’t spoken
D
haven’t been speaking
Don’t telephone me at 8 a.m. tomorrow — I ________ a meeting.
#102183
A
am having
B
will be having
C
am about to have
D
have had