1. A“ I’ll come to see you next Sunday” Bill said to Mary.
`-> ` Bill said to Mary that he would come to see Mary the following Sunday. (câu gián tiếp).
2. You must clean the wall before Christmas.
`->D.` Before Christmas, the wall must be cleaned. (câu bị động).
$3.B. differently$ (trạng từ đứng sau động từ để bổ nghĩa).