I had hoped to see her off at the station, but I _____ too busy.
#103703
A
was
B
had been
C
would be
D
would have been
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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
I ___________ to phone her all day, but whenver I phone her, the line is engaged.
#101328
A
tried
B
had been trying
C
have tried
D
have been trying