The house could fall down soon if no one       some quick repair work.
#102475
A
has done
B
is doing
C
does
D
had done
推荐题目
If nothing ________, the oceans will turn into fish deserts.
#100592
A
does
B
had been done
C
will do
D
is done
“Are you going to the super market?” “ No,_____.”
#103896
A
I cycle there
B
I walk there
C
to the work
D
I’ve already been there
---I happened to meet Lily yesterday. ---Lucky dog! You _______ each other for exactly two years.
#100161
A
haven’t seen
B
hadn’t seen
C
didn’t see
D
don’t see