1.You'll find this map of great____in helping you to get around London.A.price B.cost C.value D.usefulness2.The village is far away from here indeed.It's____walk.A.a four hour B.a four hour's C.a four-hours D.a four hours'3.Many students signed up for the____race in the sports meeting to be held next week.A.800-metre-long B.800-meters-longC.800 metre length D.800 meters length4.As a result of destroying the forests,a large____of desert____covered the land.A.number;has B.quantity;has C.number;have D.quan...