he found a number of people already work there为什么要用working发现某人正在做某事 不加时，发现某人做过某事【结果】为什么不加ING呢

He found a ___________ of keys. he found a number of people already ____(work ) there.答案给原形为什么 find sb doing 怎么用原形呢 __of people who have lost jobs__day by day,and__of them have found jobs again.A.A number of; grows ;a number B.the number;reduces;a number 1.There are ( )students in our school and ( )the students is over 2000.A.a number of ; the nunber of B.the number of; the number of C.a number of ;a number of D.a number of;the number of 2.Jack found a bag ( )on the road and picked it up .A.lie B.lyi A number of doctors and nurses were found ____(rescue)the injured. -what did he say on the phone?-he asked us_______Ahow we should do with the problem Bwhen shall we attend his wedding Cthat Lady Gaga was honored with a number of awards Dif the thief has been found he found there __________still a lot of things __________do. the number of,a small number of,a number of. a number of the number of he found a number of people already work there为什么要用working发现某人正在做某事 不加时，发现某人做过某事【结果】为什么不加ING呢 he found a bag which contained a lot of moneyhe found a bag containing______ of money难道写lots? a growing number of a.number.of?用法 a small number of a number of 造句 a number of同义词 After a number of a number of