Comlete the second sentence so that it has similar meaning to the first one: -David won the exam because his parents encouraged him ->David______________________________________ -They haven't cleaned up the street for five months ->It's___________________________________________ -We have donated books and clothes for ten years ->We began______________________________________ -In spite of having to work the next day,Tom watched films on DVD till midnight ->Even though________________________________________ -I was a two-hour flight from HN to HCM city ->It took_________________________________________ -It isn't important for you to finish the work today ->You don't____________________________________ -How heavy is the chicken? ->What___________________________________