Will you show me how ( )
A: this work is done
B: is this work done
A: this work is done
B: is this work done
举一反三
- The ratio of the work done by the machine _________ the work done on it is called the efficiency of the machine.
- The work（）by the time you get there. A: Awill have been done B: Bwas done C: Chad been done D: Dhas done
- The ratio of the work ______ by the machine to the work _____ on it is called the efficiency of the machine. A: to do ...to do B: doing....doing C: having done ... having done D: done ...done
- The ratio of the work done by the machine ______ the work done on it is called efficiency of the machine. A: against B: to C: with D: for
- 中国大学MOOC: It is dishonest of you to take ______ for work that was done by others.