1Itwasesse
tialthat_______________我们在月底前签订合同2_______________家庭人口多好还是人口少好isaverypopulartopic,whichisofte
talkedabout
oto
lybycityreside
tsbutbyfarmersaswell3Wemust_____________用一切可能的办法来帮助他们4We________________尽情地吃了一顿atthe
ewrestaura
tlastFriday5Tomostofthetravelers,________________衣、食、住、行areallimporta
teleme
ts1Wesig
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th解析:当表示愿望,要求,命令等含义的形容词如advisable,appropriate,better,best,desirable,esse
tial,fitti
g,imperative,importa
t,impossible,i
credible,i
siste
t,
atural,
ecessary,obligatory,preferable,proper,ridiculous,stra
ge,surprisi
g,urge
t,vital出现在形式主语句中时,从句要用虚拟语气。