This year the price of rice _____ about twenty percent. 
#101072
A
was raised
B
has been risen for
C
has risen by
D
has raised to
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—Does John serve in the army?—No, but he________in the army for 8 years.
#102015
A
would serve
B
has served
C
is serving
D
served
—Hi, Jack! When did you arrive in Berlin?—Last weekend .I         a different culture since then.
#101417
A
was experiencing
B
will be experiencing
C
have been experiencing
D
had been experiencing