— Did you attend Tom’s birthday party at the Grand Hotel?— I wish I _______. I _______ an English lecture in the school hall.
#103639
A
have; gave
B
did; have given
C
do; had given
D
had; was giving
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―Twenty dollars, please!― How terrible!―I ________ to bring my wallet with me.
#104499
A
was forgetting
B
forgot
C
had forgotten
D
am forgetting
With the help of high technology, many new substances(物质)______in the past years.
#102927
A
discovered
B
have discovered
C
had been discovered
D
have been discovered
______ __ a reply, he decided to send another e-mail. 
#101796
A
Not receiving
B
Receiving not
C
Not having received
D
Having not received