________ speak_________ in ________.
—Is your brother at home?—No. He ________ the library. He hasn’t come back yet.
We know that about seventy percent _____ the earth _____ covered by water.
you drive, you will be.
The policeman asked the child ________ cross the street ________ the traffic lights turned green.
— I have great _______in finishing the work by myself. Could you help me?— No problem.