Question

 Work in pairs. Match the words with their meanings.

1. soot	a. to make or become liquid by heating
2. melt	b. the upper layer or the earth in which trees and plants grow
3. crop	c. tiny pieces of black dust that are produced when wood, coal, etc. is burnt
4. soil	d. a plant such as rice or fruit, grown by farmers and used as food

Answer 1

1-C

2-A

3-D

4-B