Our classroom is very clean.Do you know who__cleaned it?A. was it that B. it was that C. was it who D.he was这要用什么语序,是强调句吗Do you know who it was that cleaned it？这个句子怎么分析

our classroom is their classroomour classroom ______ _________is their classroom Our classroom is clean同义句our classroom （） （） our classroom is very big and bright Our classroom is very beautiful and t_____ Our classroom is big and _____b_i__t That is our classroom改同义句 Look!Our classroom is very_(beauty). That is our classroom改为一般疑问句 Our classroom is on the_____(nine)floor A big tree is ( ) our classroom 连词成句:classroom bright our is Our classroom is (smoky).括号部分提问 The picture () our classroom is good There is a bee in our classroom our classroom is over there.的问句 our classroom is () the secoud floor Our classroom is 我们的教室井井有条 Our school is very beautiful,but it is not ver big.