JOHN OUGHT TO INVITE MARY TO HIS BIRTHDAY PARTY TOMORROW. MARY OUGH...

2. - DE KIEM TRA 15 BAI 6 HOC KY 2 CO DAP AN SACH 10 MOI
DE KIEM TRA 15 BAI 6 HOC KY 2 CO DAP AN SACH 10 MOI

2.John ought to invite Mary to his birthday party tomorrow.

Mary ought to be invited by John to his birhday tomorrow.