Twenty students were chosen _________to take part in the experiment.
A. random
B. for random
C. at random
D. to random
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Much to my surprise Alan suddenly _________song.
A. burst from
B. burst into
C. burst at
D. burst upon
David got a job in an important New York law office two years after he _________Harvard.
A. graduated from
B. graduated at
C. graduated in
D. graduated to
Mrs. Smith plans to retire from office as soon as all her children are _________.
A. self-employed
B. self-made
C. self-supporting
D. self-respecting
No _________doctor would refuse to treat a sick person.
A. self-employed
B. self-made
C. self-supporting
D. self-respecting