阿摩線上測驗
12. Returning home, we found that there _____ a black and white cat at the door.
(A) are
(B) was
(C) were
(D) have been
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統計： A(5), B(60), C(25), D(9), E(0) #2967787
統計： A(5), B(60), C(25), D(9), E(0) #2967787
