用the number of 或 a number of 填空1.（）cares on the roads has double_英语解答

用the number of 或 a number of 填空
1.（）cares on the roads has doubled over the past few years in our country.
2.We have been friends for ( )years.
理由要说

人气：444 ℃　时间：2020-04-16 06:14:24

解答

1.the number of
车的数量增加了
2.a number of
我们做朋友已经很久了