(2013·高考新课标全国卷Ⅰ)If we________now to protect the environment，we’ll live to regret it.
#99713
A
hadn’t acted
B
haven’t acted
C
don’t act
D
won’t act
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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
.---Ugh! I’m really cold then really hot,then cold again.I’m getting the flu.-----__________? Maybe you should go home and get some sleep.
#103743
A
Are you
B
Do you
C
Have you
D
Will you
—What is the price of gas these days? —Oh, it ____________ sharply since last month.
#102165
A
is rising
B
has risen
C
is arising
D
has arisen