1. I didn't go to school because I was sick. -> I was sick, so ................................................................................................................ 2 điểm I was sick, so I didn't go to school. I was sick, because I didn't go to school. I didn't go to school and I was sick. 2. His hobby is playing computer games in his free time .-> He likes ..................................................................................................................... 2 điểm He likes play computer games in his free time. He likes playing computer games in his free time He likes played computer game in his free time. 3. This painting is more expensive than that one (not as……….as)  That painting ……………………………………………………………… 2 điểm That painting isn't expensive as this one as. That painting is not as cheap as this one. That painting is not as expensive as this painting. Lisa has learned English for 10 years. -->Lisa began …………………………………………………………………….. 2 điểm Lisa began learning English 10 years ago. Lisa began to learning English 10 years. Lisa began learned English 10 years ago. Let’s walk to work. => What about ……………………………………………………..………….? 2 điểm What about working? What about walking to work? what about to walk to work?