The machine is rather difficult_A.to repairB.repairingC.to b
The machine is rather difficult_A.to repairB.repairingC.to b
The machine photos is easy to operate.
The o____ of the new machine is hard to learn
The reason is______he is unable to operate the machine.
The machine is used to (l ) the train.
either of the tools is used to repair this machine
the machine is simple to use.为什么不用easy.
is this factory___you came to try the newly invented machine
81.The machine is used to working for man.
The education system rather than the teachers is to ________
---The education system rather than the teachers is to answe
The engine is to a machine ______ the heart is to a man.A.wh