How many students____in the classroom?(选用have,has ,had,there is,there are,there was,there were)
____astory-bookonthetableamomentago.whatdoyou____?myparents____somenicepictures.___so...
____a story-book on the table a moment ago. what do you____? my parents____some nice pictures. ___some maps on the wall. ___a map of the world on the wall. david's friends___some tents. ______many children on the hill. 还有 用be动词填空:there____not any trees two years ago.
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