I am so tired,for I ________ English for 2 hours.
#99761
A
is studying 
B
have been studying
C
was studying 
D
had been studying
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By the time she ________ tomorrow, the work ________.
#103599
A
arrives ; will be finished
B
arrives ; will have been finished
C
will arrive ; will have been finished
D
arrives ; will have finished