It is useful to be able to predict the extent ___

It is useful to be able to predict the extent ___

It is useful to be able to predict the extent ____

______ that the earth was flat？A．Used it to be thoughtB．Did it used to be thoughtC．Was it

The prediction of the test is likely to be mistaken due to______.A．the irrelevance of the

The fact that a being is going to die does not______us to use it as a natural resource for

He came to know that the knowledge from books can be useful only _____it is linked with pr