—Car prices have been going down sharply in the last 20 years.—It's not surprising because the law of market ________ the price of a product.
#99495
A
is controlling
B
controls
C
has controlled
D
controlled
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The rescue team ______to help but failed to get there in time.
#104929
A
had wanted
B
have planned
C
were expecting
D
hoped
—When will you lend me this new magazine?—The moment I         it.
#100433
A
read
B
have read
C
will have read
D
will read
The old man was taking a walk, ____ by his grandson. 
#104560
A
supporting
B
supported
C
being supported
D
having supported