问题补充:
--- Have you considered your job as a teacher?
--- Yes. I like the job because a teacher is often considered a gardener.
A. to change; to be
B. to change; being
C. changing; being
D. changing; to be
答案:
A. to change; to be
B. to change; being
C. changing; being
(答案→)D. changing; to be
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