阿摩線上測驗
10.1 find it hard to get along with John. Some days he is so optimistic, and other days he is so pessimistic.
I think he is very_______.
(A) moody
(B) selfish
(C) flexible
(D) mature
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統計： A(84), B(10), C(16), D(1), E(0) #1028922
統計： A(84), B(10), C(16), D(1), E(0) #1028922