问题
You are late . What’s the matter ? —I helped an old man _______ lost his way home .
A:who
B:whose
C:whom
D:which
B:whose
C:whom
D:which
正确答案是：
同类题型
After a knock at the door, the children heard his mother’s voice him．
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He doesn’t do his homework________. So he always makes some mistakes.
How do you study _____ a test?—I study _____ working with a group. [ ]