76.　stopping→stop.　 77.　no→not.　78.　去掉by.　79.　invention→inventions.　80.　important前加an.　81.　Therefore→However 82.　play→playing.　83.　√　84.　deal后加with 85.　will→would.

短文改错练习(50)

76.　去掉day. 77.　sitting前加were,　78.　very→so.79.　found后加it.　80.　smoke→smoking.　81.　So→But.　82.　harmless→harmful.　83.　√84.　either→too.85.　actions→action.　

短文改错练习(49)

76.　works→work，　77.　hosting→host　 78.　hold前加to　79.　Between→Among，80.　√　81.　on→in.　82.　去掉in　83.　does→did　84.　cities→city，85.　will后加be

短文改错练习(48)

82.　too→so　/　very. 83.　spend→spending.84.　√　　85.　去掉the.

短文改错练习(47)

76.　their→our. 77.　what→that. 78.　去掉to.79.　去掉a　.80.　suggest→suggested.81.　back后加　to.

76.　在other前加　the. 77.　√　78.　on→of.　79.　taking→taken.　80.　or→and.　81.　work前加　who或将　work改为　working.　82.　去掉by.　83.　sending→send. 84.　other→another. 85.　to→that. 短文改错练习(46)

83.　climb→climbed.84.　by→with. 85.　done→doing. 短文改错练习(45)

76.　going→go. 77.　√78.　losing→lost. 79.　去掉to. 80.　that→which. 81.　the→a. 82.　more→much.

82.　worrying→worried. 83.　√84.　with　后加a. 85.　that→what 短文改错练习(44)

76.　删去out. 77.　losing→lost. 78.　came→went 79.　shook后加her. 80.　去掉第一个a.81.　删去which.