请在第____处填上正确答案。 A.or B.else C.and D.but
How long have Cuba and the United States maintained a "hostile" relationship? A.About 20 years. B.About 30 years. C.About 40 years. D.About 50 years.
请在第____处填上正确答案。 A.tall B.short C.long D.length
Many a school in the United States __ to train men in theology. A.was set up B. were set