Regular _______(main ) is very important if you want to keep this machine in good order.
举一反三
- Complete the sentences with the given words, change the form if necessary. Regular ____________ (maintain) is very important if you want to keep this machine in good order.
- 智慧职教: If we want to be in good health， regular exercise is as important ()healthy diet.
- I’m very pleased that you keep your CNC machine _______, and its environment, too.
- Notes are very important if you want to gain information from listening.
- 7. If you want, we have very good ____ here!