Now that the forest was destroyed by a big fire, a large ________of trees ______ to be planted on the mountain.
#14259
A
number; has
B
quantity; has
C
amount; have
D
sum; have
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If we ________ this speed, we will finish the task ahead of time.
#11114
A
hold up
B
break up
C
keep up
D
take up
 Every year _____ money and energy is spent on environment protection. 
#14193
A
large quantities of
B
a large number of
C
a large quantity of
D
a plenty of
Population experts say that by 2050 the world will have about 2 billion people aged over 60,____as today.
#14137
A
as three times
B
three times as many
C
three times many
D
three times many as