—I’m going to the States.—How long ________you________ in the States?
#100071
A
are; stayed
B
are; staying 
C
have; stayed 
D
did; stay
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After living there for one year, they have ____ there. 
#102985
A
accustomed to working
B
accustomed to work
C
been accustomed to work
D
been accustomed to working
----Have you got your test result?    ----Not yet. The papers _____.
#100928
A
are still being corrected  
B
are not correcting
C
have already been corrected  
D
have not corrected