III. Give the correct form of the words in brackets
1. The __________ are concerned about the oil spills in East Sea. (environment)
2. Send the letter by __________ if you want it to reach the recipient in time. (air)
3. The road in front of my house is always __________when it rains heavily. (flood)
4. Both French and English are__________languages. (office)
5. The storm last night __________ wiped out all the crops in my village. (complete)