在连锁店的商圈分析中，用来估计商店将来的日、月及年营业额的是()。

A.交通状况分析

B.客流量分析

C.周边环境分析

D.竞争分析

On the Internet, ______ varieties of entertainments _____ which you can entertain yourself both

at work and at rest. [      ]

A. it has; with  

B. there are; with  

C. it has; to    

D. there are; on