1. No one helped Lan to do the homework. -> Lan................... 2. It's three years since I last spoke to her ->I haven't........... 3.Tam doesn't type as fast as she used to ->Tam used....... 4.How long is it since you used the car? ->When............... 5.We started living here 15 years ago ->........................ 6.She visited many countries. She had lots of friends. ->The more........................ 7.No one has seen Hoa since her birthday -> The last time Hoa...................... 8.Although he took a taxi, Peter arrived late for the concert ->In spite.................... 9.It isn't necessary to finish the work today -> You don't................ 10. She doesn't want to go to the movies tonight -> She doesn't feel...........