3.The ________ likes to stay in the water to keep cool on hot days.
(A) hippo
(B) koala
(C) kangaroo
(D) lion
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統計: A(26), B(1), C(0), D(0), E(0) #3061452
統計: A(26), B(1), C(0), D(0), E(0) #3061452