10. Have you locked the door? 11. I can't go out because I haven't done my work yet. 12. He has written a letter but he can't find a stamp. 13. Here are your shoes. I have just polished them. 14. I left my house at 8 o'clock and I arrived here at 12 o'clock. 15. Have you ever been here? Yes, I spent my vacation here last year. 16. Did you hear? Susanna has got married. 17. I have never played golf. 18. He has smoked twenty sigarettes today. 19. Tom lost the key yesterday. 20. Did you see this film on TV yesterday?
1 Life in big cities will become (become) difficult in the future and many people will move to the countryside.
2 Phil will not get (not/get) a driving license next summer. He's a terrible driver.
3 I'm sure Tina and Silvia will win (win) the science competition. Their project is the best.
4 When will you ask (you/ask) your parents to buy you a pet?
5 I'm sure my dad will be able (be able) to tell us something about nuclear energy.