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
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The boy as well as the two dogs _____ when the earthquake rocked the city. 
#99341
A
were sleeping
B
is sleeping
C
was sleeping
D
are asleep
My watch _____ at nine o’clock, but now it _____.
#101326
A
was going; stopped
B
went; is stopping
C
was going; has stopped
D
went; stopped
--We haven't heard form Jane for a long time.  ---what do you suppose ___ to her?
#103978
A
was happening
B
to happen
C
has happened
D
having happened