—Nowadaysagrowingnumberofpeoplegotoworkbybike.—Bicycli...

問題詳情：

 —Nowadays a growing number of people go to work by bike.

—Bicycling is good exercise；________ it doesn’t pollute the air.

A. therefore              B. moreover         C. however                 D. otherwise

【回答】

B

知識點：副詞

題型：選擇題