21. Twenty miles ………………. a long way to walk. A. are B. was C. is D. were 22. What he told you ………………. to be of no importance. A. seems B. seem C. must seem D. have seemed 23. Mathematics ………………. not always an exact science. A. was B. are C. is D. were 24. Mr. John, accompanied by several members of the committee, ……………. proposed some changes of the rules. A. have B. has C. are D. is 25. The majority of the students ………………. him to be innocent. A. believes B. believe C. have believed D. has believed 26. The pair of the pliers ………………. on the table. A. was B. were C. are D. have been 27. A good man and useful citizen ………………. passed away. A. have B. has C. are D. is 28. The English ………………. proud and independent people. A. is B. have C. were D. are