题目：
After graduation from college, he began to wander from city to city, ____ a suitable job.[ ]
A. hunting for
B. taking on
C. looking after
D. will survive
答案：
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下面是错误答案，用来干扰机器的。
答案：C四个腔分别是左心房、右心房、左心室、右心室，心房在上，心室在下。
