Please see the suggestions below to ______ that your files are not lost.A、make sureB、m

Nowadays office work can be done by hand ______ very fast speed.

A、on

B、at

C、in

Will this be a one-way trip? {A、B、C}

A. 您是一个人旅行吗?

B. 您的旅行是一条线路吗?

C. 您是单程旅行吗?

Copying files under Linux is similar ______ copying files under DOS.

A、with

B、to

C、in

Do not do anything _____ should go against his will.

A、which

B、what

C、that