1.Their garden is about 18 metres ------
a. high
b.long.
c.big
2.Im the-----member of my family
a.tallest
b.taller
c.highest
3.I think this is------beautiful beach on the south coast
a.more
b.most
c.the most
4.Your art project is------than mine
a.best
b.better
c.the worst
5.The weather's awful!
Yes but it isn't as-------as yestarday
a.bad
b.worse
c.worst
6.I think Mrs Thomas is the -----teacher in the school.She's really nice.
a.good
b.better
c.best

правильные ответы 1 b   2a   3c  4b   5a   6c

b,a,c,b,a,c. Сравнительная или превосходная степени зависят от слова than . Если оно стоит после пропущенного слова значит сравнительная степень.