【正文】 . but 但是 B. and并且 C. so所以 D. or或者；句意：我想和你一起去游泳，但是我今天太忙了。if：如果，表示假設；but：但是，表示轉折；or：或者，表示選擇；so：因此，表示順承。根據(jù)前后句子的關系，可知設空處表示“否則”的意思，故選B。and和，表并列；or否則，用于連接兩個并列的句子；so所以，表結果；but但是，表轉折。根據(jù)句意可知前后兩句有選擇關系，要么遵照指示，要么受傷。故選B。ll never make progress．A．so B．or C．and D．but15．Those who want to lose weight have to exercise every day, _________ they might get fat again.A．though B．if C．so that D．or16．Don’t be crazy about puter games, ________ your parents will be worried.A．and B．or C．but D．so17．— Jim is a helpful student.— I think so. Thanks to him, ________ we can’t do it successfully.A．or B．so C．but D．because18．Set down your pens when you hear the bell rings, ____ you’ll be against the rules.A．and B．but C．so D．or19．You’d better wake up Tom at 6：30， he will be late for the match．A．if B．or C．and D．but20．I must go back home before 11 ., ________ my father will be angry with me.A．and B．or C．so D．but21．The shirt looks good on me, ________ it’s a little expensive.A．but B．and C．or D．so22．I’ve wanted to read The Little Prince for long, _______ today I finally borrowed the book from the library.A．or B．since C．and D．because23．We will never see Kobe play another basketball game, ________we will always remember him.A．because B．unless C．but D．if24．The toys are really old, ________ I still want to keep them.A．or B．and C．but25．Hawking is no longer with us, he will continue to inspire the world.A．so B．if C．but D．as26．I really want to have a pet dog,_____ my mother disagrees.A．but B．and C．or D．so27．I like dancing, ______ I don’t have enough time to practice it.A．or B．so C．but D．because28．—Would you like to go to the cartoon show with me?—It sounds like fun, ________ I’m too busy.A．so B．or C．for D．but29．Money is very important_________it’s not the most important thing in our life.A．or B．and C．but D．so30．Air pollution is being more and more serious, actions must be taken to stop it.A．so B．but C．or D．until31．You should return the digital camera to Sally ________she will get angry.A．so that B．because C．before D．or32．I like your story, _______ I’m confused by the ending. Can you explain it?A．and B．or C．so D．but33．The dress is really nice, _________it doesn’t look good on me .A．for B．so C．but D．or34．Alice likes swimming, ________ there is no swimming pool near her home.A．and B．but C．unless D．because35．The glasses are in fashion ________ they don’t look good on me.A．but B．so C．and D．or36．Stephen Hawking had a serious illness, _______ he kept studying physics.A．and B．but C．so D．or37．（江蘇省無錫市錫北片2017屆九年級下學期期中考試）— Are you willing to buy something big like a house from onl