The Mom went out, _______ the baby alone.
A. left
B. leaving
C. having left
D. leave
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What you said needs ________.
A. explaining
B. being explained
C. to explain
D. having explaining
I'm terribly sorry that I forget _______ him.
A. telling
B. to tell
C. having told
D. tell
I rushed to the train station only ________ the train ________.
A. find; left
B. found; left
C. finding; having left
D. found; having left
________the danger, he pushed his wife away.
A. Realize
B. Realizing
C. Realized
D. Having realized