It is generally believed that teaching is _____ it is a science[ ]

Even when I am able to get in touch with the manager and tell him your request, I cannot_____he willreply.[ ]

ey suggest the number of cars shouldbe limited to stop air pollution.— ____, the idea is not practical.

where is your father– He _____ Australia and he ______ Sydeny.

One well of the oil field was still burning with huge fire twisting crazily____ the night sky.