21. How _____________ your sister _____________ to school every day? A. is - going B. has - gone C. do – go D. does – go 22. We _____________ a party tomorrow. A. have B. are having C. have had D. were having 23. The train _____________ at 7.30 tomorrow morning. A. leave B. leaving C. leaves D. leave 24. He's living in Hanoi. He _____________ there since 2010. A. lives B. is living C. has lived D. has been living 26. People will be _____________ to a safe place to live in the short run. A. taken B. took C. takes D. to take 27. Is it _____________ to improve our speaking skill? A. import B. importing C. importance D. important