$\text{6.}$ used to being → used to be 

→ used to + V nguyên  : đã từng làm j 

$\text{7.}$ used not  → didn't use 

→ S + didn't + use to + V nguyên + O 

$\text{8.}$ rode → ride

→ used to + V nguyên 

$\text{9.}$ in spite being → in spite of being 

→ Despite/In spite of + Noun/Noun Phrase/V-ing , S + V + O 

$\text{10.}$ by → with 

→ with : với 

6. D (used to V: thói quen trong quá khứ)

being → be

7. A 

used not → didn't use 

8. B

rode → ride

9. A (In spite of/Despite+N/Ving)

in spite being → in spite of being 

10. B

by → with

$@bee$