$IV/$
$26. a$
$27. a$
$28. c$
$29. c$
$30. b$
$V/ $
$31. c$
$32. a$
$33. c$
$34. b$
$35. a$
$VI/ $
$36. There$ $didn't$ $used$ $to$ $be$ $a$ $sport$ $center$ $here. $
$37. You$ $should$ $leave$ $the$ $lights$ $off$ $when$ $you$ $leave$ $the$ $classroom.$
$38. He$ $suggested$ $that$ $we$ $should$ $do$ $something$ $to$ $protect$ $the$ $environment. $
$39. I$ $used$ $to$ $be$ $taken$ $to$ $school$ $when$ $i$ $was$ $small$ $by$ $my$ $parents.$
$40. She$ $hasn't$ $wore$ $that$ $uniform$ $since$ $she$ $left$ $the$ $secondary$ $school.$
