That doctor specializes _____ children's illnesses.
A: for
B: at
C: in
D: on
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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.
The students are made _______their essays.
A: rewrite
B: to rewrite
C: rewriting
D: rewritten
The American consumer often feels constantly _____ by insurance agents.
A: welcomed
B: pleased
C: troubled
D: disturbed
What are we going to do _______ the thief? Sending him to prison?
A: for
B: by
C: with
D: without