—Hi, Susan, you look tired.—I ______ for months for the coming celebration for the school’s 60th anniversary.
#101623
A
was preparing
B
have been preparing
C
had prepared
D
prepare
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Helen ______ her keys in the office so she had to wait until her husband ______ home. 
#102080
A
has left; comes
B
left; had come
C
had left; came
D
had left; would come
The poor little girl  _______ so much since her parents died .
#103841
A
went through
B
has gone through
C
went over
D
has gone over
John is not a man to count on, and it is very likely that the work ____ by the time he arrives here.
#99990
A
is finished
B
has finished
C
will finish
D
will have been finished