境做出贡献,世界将会变得更美好。______________________________toprotecti
gthee
viro
me
ttheworldwillbecomemuchmorebeautiful10李明昨天没来上学,因为他病了。LiMi
gdid
’tcometoschool__________________________练习二1Themeeti
gdid
tstart___everyo
ewasthereAbecauseBu
tilCwhyDif
2Theboy___tobed___hismothercamei
Awe
t
otu
tilBdid
tgoafterCwe
tu
tilDdid
tgou
til3Iwo
tbelieveyou___Ihavesee
itwithmyow
eyesAbeforeBu
tilCafterDwhe
4He___home___shewassatisfied___hisa
sweryesterdayAdid
tgou
tilwithCdoes
tgobeforewithBwas
tgoaftertoDdid
tgou
tilto
5He___backu
tilthework___do
eAis
twillbeBis
tisCwo
tbewillbeDwo
tbeis6Theydid
tstartthework___theirteachercamebackAu
tilBwhileCassoo
asDif7Tomwillcallmeassoo
ashe___Sha
ghaiAarrivesBwillreachCarrivesi
Dgetto8Imsurehellcometoseemebeforehe___Beiji
gAwillleaveBisleavi
gCleaveDleaves9Iwilltellhimthe
ewsassoo
ashe___backAcomeBcomesCwillcomeDcame10TomhasgotawatchHe___itfortwoyearsIt_______byhisfatherAhasboughtwasboughtBhasgotisboughtCwasboughthasboughtDhashadwasbought