7. B
much → more
8. B
riding → to ride
9. C
gracefully → more gracefully
10. B
more happy → happier
II
go → to go ( dòng 1)
go → went ( dòng 2 của đoạn 2)
on → with ( dòng 4 đoạn 2)
many → much ( dòng 5 đoạn 2)
feel → feeling
saw → seen ( dòng 3 từ dưới lên đoạn 2)
take → took
sell → sold
dry → drying
I
1. Your house is smaller than mine.
2. The red car is more expensive than the black one.
3. That film is more boring than this one.