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必修三 Unit1 情态动词练习题A) cant have changedC) must have changedB) wouldnt have changedD) shouldnt have changedC) mustnt have eaten D) shouldnt have eatenB) must have been in the U.S.A. for some timeA) should have received B) has receivedC) couldnt have receivedD) ought to have received20) I _ you a valuable present for your birthday, but I was short of money.A) would have liked to giveB) liked to giveC) have liked to giveD) would like to give21) “Where _ my umbrella?” “Somebody _ it away by mistake.” A) is, must have taken22) What _ would happen if the director knew you felt that way?