----- You seem in low spirits. Anything wrong?----- I ______ in the important exam. I let my parents down.
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A
fail
B
failed
C
has failed
D
had failed
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.
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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