tìm lỗi sai trong mỗi câu sau và sửa lại:
1) Is they doing their homework at the moment
2) Hoa walking in the park with her dog, Skippy now
3) How often are you playing guitar? ----- I never play guitar
4) What are you doing at this time? ----- I study English at school
5) Does your teachers go to work by car?
Giúp em zới anh chị ơi!!! 
1) Is they doing their homework at the moment ?
Is => Are
2) Hoa walking in the park with her dog, Skippy now
walking => is walking
3) How often are you playing guitar? ----- I never play guitar
are => do
4) What are you doing at this time? ----- I study English at school
are you doing => will you be doing
5) Does your teachers go to work by car?
does => do
1) Is => are
2) thiếu tobe => Hoa is walking in the park with her dog, Skippy now.
3) are => do
4) study => am studying
5) Does => Do hoặc teachers => teacher
1) Is they doing their homework at the moment
Is => Are
2) Hoa walking in the park with her dog, Skippy now
walking => is walking
3) How often are you playing guitar? ----- I never play guitar
are => do
4) What are you doing at this time? ----- I study English at school
are you doing => will you be doing
5) Does your teachers go to work by car?
Does => Do
