I The students are hearing rumours about their teacher's engagement for a week 2 The familywas at the hospital since they heard about the accident 3. By the time Bob unlocked the door and got into his apartment, the phone has already stopped ringing 4As soon as Minh will graduate, he is going to return to his hometown. 5 By the end of the 21th century, scientists will discover the cure for common co 6 The bank lent us money for a down payment, so now we are owning the house we used to rent. 7 It began to rain while Phong and I walked to school this morning. 8Mary has circles under her eyes because she has been sleeping only two hours last night.