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With the help of high technology, more and more new substances ___in the past few years.
#101737
A
discovered
B
have discovered
C
had been discovered
D
have been discovered
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 ----when are you going off for your holiday? ----My plane ______ at 9:20, so I must be at the airport by 8:20.
#99845
A
took off
B
has taken off
C
is taking off
D
would take off
He talks about Rome as if he _________there before.
#102438
A
were
B
had been
C
has been
D
was
They suggested that the library ________ open during the vacation.
#102904
A
was kept
B
would be kept
C
is kept　
D
be kept
I______toward the door to go outside when suddenly Jim opened it.
#99533
A
was walking
B
walked
C
hadwalked
D
walk
Guangzhou Evergrande has raised China's hunger for soccer glory ever since the year 2013 ______ a series of its victories over other teams in and abroad China.
#99674
A
saw
B
bid
C
had seen
D
had bid