Half of the workershere 【 】 under30 【 】 A is years B are yea

Half of the workershere 【 】 under30 【 】 A is years B are yea Half of the workers here _____ under 30 _____.　A.is/years B. The johns stayed in HeFei （ ）.A.for half a year B.half a yea Half of the fruit _____ gone bad. A. is B. are C. has D. hav Half of the fruit ( )bad.A.are B.is C.has D.have In 1620,about half of the USA___covered by forest A:are B:is Half of the class ___ girls .A is B are C was D have been 谁若 Half of the books （ ）written in English A.is B.are C.have D. Half of the workers here are under twenty __B__ A.years old The _ boy is Tom's brother.A 8-year old B 8 years old C 8yea The factroy produces half a million pairs of shoes every yea The factory produces half a million pairs of shoes every yea