Jack is always careful. He does his homework carefully
.
1.Mandy is always fast. She rides her bike

2.Dean is always early. He arrived at my house

3.My brother Luke is always slow. He walks

4Margaret is good at everything. She sings

5Alan is always late. He gets to school

1.Mandy is always fast. She rides her bike fastly

2.Dean is always early. He arrived at my house ear

3.My brother Luke is always slow. He walks slowly

4Margaret is good at everything. She sings well

5Alan is always late. He gets to school lately

Объяснение:

тут просто надо к прилогательному прибавить это "ly" окончания.

а в некоторых словах(прил.) не нужно прибавлять окончания "ly" к примеру

good здесь не нужна окончания

good- well