Ex. 1. Change to question form, beginning each question with the question word in parenthesis (Passive into Active)
1. America was discovered in 1492. (When)
2. The house was destroyed by fire. (How)
3. The work will be completed next month. (When)
4. The child was finally found in the park. (Where)
5. The tree was planted by my father. (Who...by/By whom)
6. The mail is delivered at ten o'clock every day. (At what time)
7. The money was stolen by one of the servants. (Who...by / By whom)