He seemed _______ the secret.
A: know
B: to know
C: knowing
D: known
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It is unlikely ____ the world energy will last forever.
A: that
B: which
C: because
D: for
She was destined _____ a pianist.
A: to becoming
B: becoming
C: to become
D: becoming of
That doctor specializes _____ children's illnesses.
A: for
B: at
C: in
D: on
What is the most important tiling for writing the research papers?
A. Selecting a good topic.
B. Using required forms.
C. Referring to the style. manual.
D. Handing in time.