tìm lỗi sai và sửa
1 .john used to gong to school by bus
-> going -> go
2 she asked me how long does it take me to go to school
-> does it take -> it took
3 your friends went to your native village last weekend , weren't they ?
-> weren't -> didn't
4 .sally said she will be a teacher some day
-> will -> would
7.your brother practices to play the guitar every day,doesn't he?
-> to play -> playing
8.he must finish his homework before going to class,does he?
-> does -> musn't
9.it rainted heavily while i slept soundly last night
-> slept -> was sleeping
10.lan wishes that she can go to singapore to visit her pen palư
-> can -> could