Write the four following sentences in their active and passive forms, as
the sentence, _War sweeps the earth_, is written.
1. Education gives power.
2. Knowledge frees men.
3. Labor unions help the workers.
4. The people seek justice.
+Present+ _Active_ War sweeps the earth.
_Passive_ The earth is swept by war.
+Past+ _Active_ War swept the earth.
_Passive_ The earth was swept by war.
+Future+ _Active_ War shall sweep the earth.
_Passive_ The earth shall be swept by war.
+Pres. Per.+ _Active_ War has swept the earth.
_Passive_ The earth has been swept by war.
+Past Per.+ _Active_ War had swept the earth.
_Passive_ The earth had been swept by war.
+Fut. Per.+ _Active_ War shall have swept the earth.
_Passive_ The earth shall have been swept by war.