Before you leave the lab, the doors and windows ____shut in case of rain.
#103452
A
is
B
are
C
is to be
D
are to be
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He complained that this was the third time he _________ of the changes of the meeting.            
#102890
A
is informed
B
was informed
C
has been informed
D
had been informed
-Oh, it’s you, Steve! I ________ you. -No surprising. I’ve just had my hair cut.
#104757
A
don’t recognize
B
haven’t recognized
C
didn’t recognize
D
hadn’t recognized
 She ___ volleyball regularly for many years when she was young.
#99986
A
was playing
B
played
C
has played
D
had played