telephone前搭配什么介词
—Have you been in contact with Andrew recently? —Only ______ telephone. A. on B. over C. by D. with 请问应选哪个介词?谢谢!
telephone是一种machine吗
有这样一个句子: When did the telephone become an indispensable machine? 写这个句子的人认为 telephone 是一种 machine,是这样吗?