As we stood on the top of the hill, we could see the beautiful scene that _______ before us.
#102431
A
had spread
B
has spread
C
spread
D
spreads
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Betty will ring me up as soon as she ______ in Beijing.
#101706
A
arrive
B
arrives
C
arrived
D
will arrive
Though iPhone 4 is such a hit product, I won’t buy one unless its after service ______.
#102540
A
was improved
B
gets improved
C
is improving
D
had got improved
--How did he get infected? --She ____the viruses without any protection.
#101629
A
exposed to
B
had exposed to
C
was exposed to
D
had been exposed