31 I have learnt English for 5 years32 My brother used to collec stamps when he was young33 Although he was busy, he came to see us34 If I knew her telephone number, I could phone her35 Remember to turn off the faucets when you leave for school36 It is necessary for you to prohibit and fine heavily anyone who catches fish37 What will you have to do if you decide to take a space trip?38 Neil Armstrong, who first walked on the moon, lived in the USA39 We haven't met her since we left school40 The novel given to you on your birthday was 5$Câu trả lời: 31 I have learnt English for 5 years32 My brother used to collec stamps when he was young33 Although he was busy, he came to see us34 If I knew her telephone number, I could phone her35 Remember to turn off the faucets when you leave for school36 It is necessary for you to prohibit and fine heavily anyone who catches fish37 What will you have to do if you decide to take a space trip?38 Neil Armstrong, who first walked on the moon, lived in the USA39 We haven't met her since we left school40 The novel given to you on your birthday was 5$