Bài 1: Cho dạng đúng của động từ trong ngoặc: 1. If I see him, I _____ (give) him a gift. 2. If I had a typewriter, I _____ (type) it myself. 3. If I had known that you were in hospital, I _____ (visit) you. 4. You could make better progress if you _____ (attend) ... . 9. If I _____ (find) a cheap room, I will stay a fortnight. 10. A lot of people _____ (be) out of work if the factory closed down.