$\text{1}$ Mary used to walk to school when she was a kid . 

→ used to + V-inf : đã từng làm j 

$\text{2}$ There didn't use to be any smart TV (in the past) . 

→ didn't use to + V-inf : chưa từng làm j 

$\text{3}$ I used to eat snack when I was a child . 

→ Tương tự câu 1

$\text{4}$ Ann study hard , so she got good mark . 

→ Clause 1 , so + clause 2 : kết quả 

$\text{5}$ He should go to bed early . 

→ should + V-inf : nên làm j 

$\text{6}$ I am interested in watching TV with my mom in my free time . 

→ be interested in + N/V-ing : hứng thú ở cái j/việc j 

$\text{7}$ She thinks carving eggshells is interesting . 

→ find sth/doing sth adj = think sth/doing sth + is + adj 

$\text{8}$ Chưa nghĩ ra 

$\text{9}$ How much do these shoes cost ? 

→ What is the price of + N ? 

→ How much + do/does + N + cost ? 

$\text{10}$ The street has lots of leaves . 

→ S + has/have + N + ... 

$\text{@Zyy}$