1.It's time ____________________ to study hard for our entrance exam to high school. (1 Điểm) A.for they B.for we C.for them D.for us 2.They enjoy _____________________ the news but we ________________________. (1 Điểm) A.to watch / don't B.watching / don't C.to watch / do D.watching / do 3.It's high time we ____________________ back to school. (1 Điểm) A.come B.to come C.came D.coming 7.He’s used _________ at home working online. (1 Điểm) staying stay to stay to staying 8.We used to ________ this door very often but now we don’t. (1 Điểm) using use to using to use 9.We last went to a restaurant 6 weeks ago. (We have _________________________________.) (1 Điểm) been to a restaurant 6 weeks ago been to a restaurant for 6 weeks not been to a restaurant 6 weeks ago not been to a restaurant for 6 weeks 10.I started to teach in this school in 2000. (____________________________________ .) (1 Điểm) I have teach in this school since 2000. I have started to teach in this school in 2000. I have tought in this school for 20 years. I have taught in this school since 2000.