Tourists often surprised at ______ so many flat and good roads in the mountainous regions.
A) there are C) there to be
B) there being D) there were

企业网上银行年费自动扣收执行之后，客户可向网上企业银行业务年费收入户转账的方式完成年费的缴费。缴费成功后客户可（）恢复企业网上银行服务。

A.实时

B.T+1个工作日

C.后台处理完毕后

D.日终后