问题
What do you think of being a volunteer, John?—I find it a stressful job but one ___ you can really help people.
A:where
B:which
C:when
D:that
B:which
C:when
D:that
正确答案是：
同类题型
China has launched another man－made satellite，________ isannounced in today’s newspaper
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What _____ Yu Ping usually _____ in her free time—She usually goes to the library.