If their marketing plans succeed,they ________ their sales by 20 percent.
#99749
A
will increase
B
have been increasing
C
have increased
D
would be increasing
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The pen my father sent me as my birthday gift           very well.
#104251
A
is written
B
writes
C
writing
D
has written
 —Why does the lake smell terrible?—Because large quantities of water           .
#103559
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
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
She won the first prize;though none of us   it.
#102979
A
expected
B
had expected
C
was expected
D
would expect