Điên giới từ tiếp ạ giúp mk đi các bn iu 1. Are you acquainted _____ the lady? 2. _____ the children left, the house was very quiet. 3. These photographs were taken _____ a friend of mine. 4. The river Rhine flows _____ the North sea. 5. I shall meet you _____ the corner _____ the street. 6. I always come _____ school _____ foot. 7. He had learned the whole poem _____ heart. 8. He has waited _____ her for a long time. 9. He’s not very keen _____ watching football, but his wife is. 10. Are you worried _____ the final examination?