The machine is ___________ .
A: in operate
B: in operation
C: in common
A: in operate
B: in operation
C: in common
举一反三
- The ___________ of a big new machine can be hard to learn. A: operate B: operation C: operating D: operative
- C Choose the best answer to complete each sentence. 1. The ___________ of a big new machine can be hard to learn. A: operate B: operation C: operating D: operative
- The of this machine is simple. (operate)
- The _______(operate) of the machine is easy.
- When multiple people operate a machine tool, ( ) A: two people can operate the machine at the same time B: only one person can operate at the same time C: only one person can operate at the same time, and other students can leave the machine to rest D: All of the above are correct