Ask questions indicated in the brackets.

1. Such equipment is sold in special shops, (in what shops?)
2. These files must be returned in two hours, (when?)
3. This picture gallery was destroyed by the fire. (how?)
4. This work can be done in two days, (in how many days?)
5. The money will be spent on medicine, (on what?) 6. Such questions are often asked by children, (by whom?) 7. The post will be delivered at 7 o'clock, (when?)
8. New roses have been planted in her garden, (what?)
9. The telephone was invented by Alexander Graham Bell, (who?)
10. Rice is grown in many countries, (where?)
11. This report must be signed by Mr. Hardy, (who?)