Stoneisstrongandcannotberotten.Thatis　　　stonewalls areu...

問題詳情：

Stone is strong and can not be rotten. That is　　　stone walls  are used instead of fences around New England fields.

A. why              B. because          C. that             D. what

【回答】

A

知識點：連詞

題型：選擇題