GIÚP EM VỚI Ạ EM SẼ VOTE 5* VÀ CTLHN Ạ 19. Remember not to _______ your stay there; the children need you to play with at home. A. prolong B. lengthen C. extend D. expand 20. We shouldnt _________ the old customs if we know they are no longer suitable. A. associate B. stare to C. stick to D. get hold of 21. You should make full use __________ every chance you have to speak English. A. of B. with C.in D. for 22. She cant seem to raise her grades __________ hard she studies. A. even if B. really C. as much D. no matter how 23. You should take regular exercise ___________sitting in front of the computer all day. A. in spite of B. despite C. instead of D. without 24. I walked away as calmly as I could _________ they thought I was the thief. A. or else B. to avoid C. owing to D. in case 25. Some officials proposed to increase the __________ on tobacco. A. money B. fee C. duty D. salary