—Look! Someone has spilt coffee on the carpet. —Well, it ________ me. 
#104789
A
isn’t
B
hasn’t been
C
hadn’t been
D
wasn’t
推荐题目
----Did you watch the football final between China and Japan?---Yes, but I would rather____.
#104030
A
not do that
B
not doing that
C
not have done that
D
hadn’t done that
The pair of leather boots that I bought last weekend_______ comfortably.
#103429
A
wears
B
is worn
C
was worn
D
was wearing
 Various efforts over the centuries _________ to predict earthquakes to reduce the damage. 
#99978
A
are being made
B
have been made
C
were made
D
were being made