Viết lại câu cho nghĩa không thay đổi

viết lại câu cho nghĩa ko thay đổi
they have written this letter for 3 years
they wrote.....................
she is a hard student
she studies......................
why don't we go to club
let's..........................
hung is watering the flower
the...............
she has to look after her grandfather
her grandfather............