If nothing______, the oceans will turn into fish deserts. 
#99587
A
does
B
had been done
C
will do
D
is done
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– Guess what, we’ve got our visas for a short-term visit to the UK this summer.– How nice! You _______ a different culture then.
#100908
A
have experienced
B
will be experiencing
C
have been experiencing
D
will have experienced
Pardon? I ___ quite catch you.
#103974
A
didn’t
B
couldn’t
C
don’t
D
can’t
I was just going to cut my rose bushes but someone _______ it. Was it you?
#101219
A
has done
B
had done
C
would do
D
was doing