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ir country before long . A. invited B. had invited C. was inviting D. would be invited 現(xiàn)在完成時態(tài): have/has + been +過去分詞 With the help of the Hope Project, more and more new schools _____ in the poor area. A. built B. have built C. have been built D. have been building 過去完成時態(tài): had + been +過去分詞 He came out and told us that the work __________. A. finished B. was finished C. had finished D. had been finished 情態(tài)動詞: 情態(tài)動詞 +be +過去分詞 The programmes _______ if you use a short wave radio. A. can pick up B. pick up C. picked up D. can be picked up a)不知道或沒必要知道動作的執(zhí)者。 The book was first published in the late 1990s. b)不便說出動作的執(zhí)行者。 The plan was generally considered