It’s known to all that unless you take exercise you won’t keep good health. A．no

It’s known to all that unless you take ________ exercise you won’t keep good health.

  A．normal               B．ordinary

  C．average               D．regular

试题答案

D　regular在此表示“常规的，定时的”：normal，ordinary均表示“普通的，一般的”；average“平均的”。