`text{3.I will try to get there on time.}`

`text{4.I spent two hours cleaning my room.}`

`text{5.He had graduated from the National University before he wprked as a physicist.}`

`text{6.After having lived in Hanoi for ten years,we moved to Ho Chi Minh City.}`

`text{7.I prefer cycling to traveling by motorbike to work.}`

`text{8.She can earn enough for her family is which makes her family happy.}`

`text{9.She has repaid the borrowed from me is which I appreciate.}`

`text{10.She has apologized for causing some trouble is which is acceptable.}`

`text{11.James didn't use to like school when he was young.}`

`text{12.Ann used to be a secrectary for many years.}`

`text{13.Our brother has been ill for two weeks.}`

`text{14.I haven't received my brother's email for 5 months.}`