The population of the world ____ still ____ now.
#39634
A
has; grown
B
is; growing
C
will; grow
D
is; grown
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Robert is away. He _______ America since last week.
#36502
A
has been to
B
has joined a club in
C
has studied in
D
has become a manager in
–What are you going to do this Sunday? –I _____yet. 
#40265
A
won’t decide
B
didn’t decide
C
haven’t decided
D
don’t decide