--May I remind you that Mr. White is waiting outside, Mrs. Green? ---Oh, I _________ all about it. 
#103796
A
forget
B
had forgotten
C
forgot
D
was forgetting
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When the old man ______ to walk back to his house, the sun ______ itself behind the mountain. 
#100109
A
started; had already hidden
B
was starting; hid
C
had started; had already hidden
D
had started; was hiding