Themachinehasbeenusedmanyyears.It'snowonderthatitdoesn'...

問題詳情：

The machine has been used many years. It's no wonder that it doesn't work well ________．

A．regularly  B．constantly

C．occasionally  D．frequently

【回答】

C　考查副詞辨析。occasionally 偶爾； regularly 定期地； constantly 不斷地，經常地； frequently 頻繁地，經常地。句意：這台機器用了好多年了，難怪(它)偶爾運轉不良。

知識點：副詞

題型：選擇題