1. If it ( rain)……weren't for rain……………………….. tonight, I won’t go for a walk.(if it weren't for + danh từ)
2. Duy is not reading now. He ( watch)……………is watching……… a game of tennis on TV. ( dấu hiệu now)
3. They ( never see)………………have never seen………………………. such a big flower. (HTHT - they số nhiều dùng have)
4. The USA ( have)……………………have……………. colour TV in 1953. ( the N + have)
5. You shouldn’t ( eat)……………………eat………….. food in this canteen. ( should + V)
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