John said he had been working in the office for an hour, _______ was true.
#94927
A
he
B
this
C
which
D
who
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Using his hybrid rice, farmers are producing harvests          before.
#93010
A
as twice large as
B
twice large than
C
larger than twice
D
twice as large as
John asked Tom ____ give him a lift to the office. 
#93583
A
if he could
B
could you
C
if could he
D
if could
The new bridge is ______ the one built last year. 
#92356
A
three times width of
B
three times that of
C
three times the width
D
three times the width of