(2013·甘肃兰州、靖远名校高三模拟)Social practice is an opportunity for students to gain________better understanding of how________society operates.
#99137
A
the;the 
B
the;/
C
a;/ 
D
the;a
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 — Ann is in hospital.— Oh, really? I ______ know. I ______ go and visit her.
#99804
A
didn't, am going to
B
don't, would
C
don't, will
D
didn't, will
I first met John at my sister’s wedding. He _________ with the bridegroom at the time.
#100052
A
was talking
B
talked
C
had talked
D
had been talking
 I thought the teacher would say something about our exam result but he ________ it.
#99454
A
doesn't mention
B
hasn't mentioned
C
wouldn't mention
D
didn't mention