3)
1 . Did you use to go to the beach when you lived in Nha Trang ?
( Did sb use to sth : Đã dần quen với .... chưa ? )
2 . I spend about two hours each day doing my homework
( Spend + KTG + Ving )
3 . Why don't we go to work by bike
( Why don't we + Vinf )
4 . I haven't seen Hoa since 2012
( Hiện tại hoàn thành)
5 . These are Lan's flowers