Here are the matches for Exercise 1:

1. A sunny - e. day
2. Heavy - f. rain
3. A strong - g. wind
4. A clear - c. sky
5. Pour - a. with rain
6. Thick - b. fog
7. Thunder - d. and lightning

For Exercise 2:

1. The sun is shining. It is **B. sunny**.
2. Small drops of water fall from clouds in the sky. It is **B. raining**.
3. The storm with lightning is **A. thunderstorm**.
4. _____ is a large curve of different colors in the sky that is caused by the sun shining through rain. **A. rainbow**.