The reason for my return is______I left my keys behind.
A. because
B. it
C. that
D. why
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Chinese officials made______clear that there could be nonormalization of relation until the United States terminated diplomaticrelations with Taiwan.
A. that
B. them
C. it
D. this
After the accident, I opened my eyesslowly and realized______I wasstill alive.
A. that
B. whether
C. what
D. which
John didn't say_______he would return, but I presume he'llbe back for dinner.
A. that when
B. where
C. if or not
D. when
He asked me_______I intended to do after my graduation.
A. that what
B. what
C. that
D. which