howerethefirst(men)tolandonthemoon或landedonthemoonfirst.2.Ihappenednottobeathome/nottobein/tobeout,(didn'thappentobeathome)whenthefirebrokeout.3.Theoldpeasantsuggestedthatareservoir(should)bebuiltatthefootofthehill.4.Thereissomethingwrongwiththerefrigerator,Imusthaveitrepaired.5.Itwasreportedin/byyesterday'ehomefromtheUnitedStatessoonaftershe(had)discovered/madethediscoveryofanewtheoryinmedicine.6.Wewereglad/pleased/overjoyedtohearthatalltheschoolteachersinourcountrywouldgetapayraise/rise(havearaise/riseinpay).七、阅读理解1.(B)increasesinvalue.2.(D)itworthasmuchassixteenthousandandeighthundreddollars.3.(D)aformercolonyofGreatBritain.4.(C)eenthcentury.5.(A)notyetusingstamps.6.(C)invitationstoabigdancehadtobepostedquickly.7.(D)wronguseofwords.8.(C)moneyhasbeenpaidforthestamp.9.(B)theTwo-pennyBlue.