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laianh332001
2 năm trước
Cho bố mẹ thuần chủng thân cao và thân thấp lai với nhau thu được F1 100% thân cao. Cho F1 lai với nhau thu được F2. Em hãy viết sơ đồ lai từ P đến F2?
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1. They asked, “Is the work going to be easy?” ~ They wondered if _______. A. was work going to be easy B. the work is going to be easy C. the work was easy D. the work was going to be easy 2. The doctor says, “The moisture in the air might affect your breathing.” He thinks that the moisture in the air _______. A. might affect my breathing B. might affect your breathing C. would affect my breathing D. may affect your breathing 3. It was a tragedy that she was killed on her wedding-day. ~ To _______ was a tragedy. A. killed on her wedding-day B. have been killed on her wedding-day C. being killed on her wedding-day D. have killed on her wedding day 4. When the teacher fell off his chair, the students _______. A. weren’t able to stop laughter B. could not stop but laughing C. couldn’t help laughing D. could not avoid to laugh 5. _______, he ran out of the classroom. A. Turning suddenly, with tears in his eyes B. Having tears in his eyes and turned suddenly C. With a sudden turn, tearful eyes D. With tears in his eyes and a sudden turn 6. Did you notice the little boy _______ away? A. take the candy and run B. took the candy and ran C. taking the candy and running D. who is taking the candy and running 7. _______, she washed the cup and put it away. A. Having the coffee B. Drink the coffee C. Having drunk the coffee D. Has drunk the coffee 8. If I catch you _______ again, I’ll make you _______ in after school _______some extra work. A. cheating / to stay / to do B. to cheat / to stay / to do C. to cheat / stay / to do D. cheating / stay / to do 9. A: Why didn’t you enjoy your holiday? B: Well, _______ a long story short, the hotel was dirty and the food_______ gave me incessant indigestion. A. cutting / being served B. to cut / serving C. having cut / served D. to cut / served 10. We are both looking forward _______ next Saturday. A. to going on vacation B. to go on vacation C. to be going on vacation D. to have gone on vacation

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