17.My computer is getting slow. I really need to have it ________.
(A) upgraded
(B) to upgrade
(C) upgrading
(D) upgrade

答案：登入後查看
統計： A(234), B(28), C(31), D(23), E(0) #3814422

詳解 (共 1 筆)

#7575704
答：(A)　have it 加過去分詞是...
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