Cho cây hoa đỏ giao phấn với cây hoa trắng thu được F1 .Tiếp tục cho F1 tư thụ phấn thì thu được F2 gồm 950 cây hoa đỏ và 271 cây hoa trắng .Biện luận và viết sơ đồ lai từ P →F2 Chủ yếu là phần biện luận

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I/ Correct the verb form in parentheses. 1. The Sun ( rise)……….in the East. It (not rise)…………………in the west. 2. She (speak)…………….French, she (not speak)……………………English. 3. He (watch)……………TV and his wife (wash)……………clothes. 4. Daisy(not watch)…………………..TV and Jane (not do)………………… her homework. 5. Mr.Ba always (have)………….coffee for breakfast, He ( not have)……………….milk. 6. We (not watch)…………………TV in the morning.We (read)………..newspapers. 7. What (do)………this sentence mean? It(mean)……………that you’re lucky. 8. Hoa (study)……………English, she (not study)………………French. 9. I think he ( be)………a doctor, he (not be)…………an engineer. 10. Mothers often(tell)………….small children Fairy tales before bedtime. II/Put the verbs in parentheses into present continuous tense. 1. 1.Look! Somebody (come)……………….. 2. It (rain)……………now, take my umbrella please. 3. Keep quiet ! we (listen)………………to music. 4. Marry (write) ……………………..her lessons at this moment. 5. Be careful! Water ( boil)………………. 6. Don’t bother me, please.I (work)……………… 7. Mom is cooking dinner while Dad ( wash)………………..vegetables. 8. What……..you (do)…………now? I’m (look)…………..for my key. 9. Mrs. Thu is always (lose)…………….her hat. 10. Nga (not watch)………………………..TV now. lm cái cho zui đi mà