1989年1月大学英语四级(CET-4)真题试卷41.Marys score on the test is the highest in her class; she _ have studied very hard.A) mayB) shouldC) mustD) ought to42._ that the trade between the two countries reached its highest point.A) During the 1960sB) It was in the 1960sC) That it was in the 1960sD) It was the 1960s43.He suggested _ to tomorrows exhibition together.A) us to goB) we wentC) we shall goD) we go44.No agreement was reached in the discuss