14. ----_______ you _______ to Beijing ----No, I ______.I ______ there early next month. A.Have, been, haven't, am going B. Had, been, hadn't, am going C. Have, gone, haven't, was going D. Did,go, didn't, was going 15. ---You sister ______ to London to study English. Is that true ---Yes , she ___ there for two months. A. has been, has been B. will go, has gone C. gone, will be D. has gone, has been 16. He has a computer of his own. He _
___ it two days ago A. bought B. bought C. bought D. has bought