Trả lời:

1, were - would practice

2, would forget - didn't remind

3, had - would understand 

4, had function - would use

5, could - would apply

6, lost - would you do

7, tidied up - wouldn't be

8, would travel - spoke

9, wouldn't get - studied

10, didn't have - wouldn't pay

Giải thích thêm: Cấu trúc 2nd conditional sentences:

  If + S + V-ed + O, S + would + (not) + Vbare + O

Eg: If my mother were here, she would help me to do this exercise.

  ~HỌC TỐT~

1 were - would practice

2 would forget - didn't remind

3 had - would understand

4 functioned - would use

5 could - would apply

6 lost - would you do

7 tidied - wouldn't be 

8 would travel - spoke

9 wouldn't forget - studied

10 didn't have - wouldn't pay