This teaching method is a ______ of many methods which have been used for decades in the c

Solar cooking is a _______cooking method.A、convenientB、convenienceC、convention

Care must be taken in using this method lest overflow______.A．should occurB．occursC．occurr

It ______ that this method didn ’t work very well.A) turned aroundB) turned outC)turne

The teaching method should be varied at different stages of learning______achieving better

This method saved half the labor that______to combat the insects separately.A．would not ha

It is well known that teaching is a job _____ enough patience.A. calling on