2.1 In spite of what we said,he refused to to the police station. A.give away B.give off C.give himself away D.give himself up 2.2 It is imperative that the students writing their papers by the end of the month. A.finish B.must finish C.will finish D.are to finish 2.3 I invited Tom and Ann to dinner,but of them came. A.both B.none C.either D.neither 2.4 The heart is an important organ of circulation function is to pump blood to all parts of the body. A.which B.whose C.of it D.its 2.5 with the size of the whole earth,the highest mountain does not seem high at all. A.When compared B.Compare C.While comparing D.Comparing2.1 In spite of what we said, he refused to ________ to the police station. A.give away B.give off C.give himself away D.give himself up 2.2 It is imperative that the students ________ writing their papers by the end of the month. A.finish B.must finish C.will finish D.are to finish 2.3 I invited Tom and Ann to dinner, but ________ of them came. A. both B.none C.either D.neither 2.4 The heart is an important organ of circulation ________ function is to pump blood to all parts of the body. A.which B.whose C.of it D.its 2.5 _________ with the size of the whole earth, the highest mountain does not seem high at all. A.When compared B.Compare C.While comparing D.Comparing