4. People got very excited when they watched Ms. Smith_________at the party.
(A) danced
(B) dancing
(C) has danced
(D) to dance
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統計: A(101), B(362), C(45), D(26), E(0) #3104684
統計: A(101), B(362), C(45), D(26), E(0) #3104684