现在完成时态 练习题(18)

25. I _____ this book for half a year. A. have bought B. have had C. bought D. had 26. The students are sorry to hear that famous singer _______ for a year. A.has left B. has gone C. has been away D. has gone away 27. --- ______ you______ your homework yet --Yes, I _____ it just now. A. Did; do; finished B. Have; done; finished C. Have; done; have finished D. Will; do; finish 28. The sand storm weather ______ in Beijing several times this year. A.happen B. happened C. has happened D. have happened