---Has Sam finished his homework yet? ---No, He ____________(finish) it. 2.-- What ___________(keep) you so late to be here? ---Traffic jam. 3. ―What were you doing when Tony phoned you? ― I _________________(start) to take a shower. 4.Because the shop_______________________(close down), all the T-shirts are sold at half price. 5.He kept looking at her, wondering whether he________________ (see) hersomewhere before. 6.―George and Lucy got married last week. Did you go to their wedding? ― No, I________________ (not invite) up to now. 7.More and mre patients ___________________(treat) in hospital since 1986.. 8. What were you doing last night?. ― Oh, I _________________(wait) for a friend from England at the airport. 9.She has set a new record, that is, the sales of her latest book____________________(reach) 50 million recently. 10.The number of deaths from heart disease will be reduced greatly if people_________________ (persuade) to eat more fruit and vegetables.