1.Fireman (пожарник)-с.
2.Doctor (доктор)-а.
3. Lifeguard(cпасатель)-b.
1. pens, classes, stories, roads, days, cats, bushes, desks, tables.
2. braver, the bravest; deeper, the deepest; wider, the widest; dirtier, the most dirty; cleaner, the cleanest; weaker; the weakest; taller, the tallest, colder the coldest; merrier the merriest.
3. 1)are...am
2)is
3)is
4)have
5)are
6)are
7)are
8)are
9)are
10)are
Ошибки скорее всего есть
<span>The teacher wrote some formulas on the board having explained the laws of motion</span>