赞可夫主张教学应该走在学生发展的前面，所依据的是()
A、最近发展区A
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Theywrotealetterofthanksto________hadhelpedthem.
is,are,has,have,havingTheaverageBritishfamily,which________smallerandricherthan50yearsago,________3.6members.
IntheGrammar-TranslationMethod,grammaranalysisandtranslationprovedtobe_______instudyingforeignculturethroughliteraryworks.
Pleaseseetoitthatthegoodsweorderedareshippedassoonasthecoveringletterofcredit____you.()
Thetwinshadbeenawayforsuchalongtimethatmanypeopleinthevillagethoughtthey________.
