4. He felt embarrassed with so many eyes 　　　　(focus) on his clothes he was wearing.

3. Our group is mainly concerned with bird 　　　　(conserve) in coastal areas.

2. It’s no good 　　　　(waste) strength in shouting.

1. After a knock at the door, the child heard his mother’s voice 　　　　(call) him.

2.Unless we get more funding we’ll be 　　　　from finishing our experimental program.

1.Firemen must carry breathing equipment to 　　　　　　themselves from the smoke.

4.They 　　　　a tent when they go there.

C. prevent/protect

3.The primary school in that poor village was 　　　　　　in 2003 with the help of some kind people.

2.This country was 　　　　　on the principle of individual freedom for all.

1.We must 　　　　　　a world with more partners and fewer adversaries.