II. Choose the best answer for the following questions 1. _______ does your brother go fishing? He goes once a week. A. How old B. How often C. How D. What 2. Lan did not go to school yesterday_______ she was ill. A. so B. because C. but D. and 3. She _______ her homework 2 hours ago. A. is doing B. does C. did D. has done 4. _______ you been in HCM city? A. Do B. Has C. Did D. Have 5. If we reduce soil pollution,we .........................enough food to eat A. will have B. has C. have D. are having 6. They think they will stay ....the Moon ..........a short time. A. at/at B. at/for C. on/at D. on/for

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