问题
选择题
Zhang Hua was glad that people _______ each other.[ ]
A. can help
B. is able to help
C. could help
D. could be able to help
答案
答案：C
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Zhang Hua was glad that people _______ each other.[ ]
A. can help
B. is able to help
C. could help
D. could be able to help
答案：C