题目

用所给词的适当形式填空。【1】Look! your sister_____（do） her homework.【2】Either you or he_____(be) right.【3】How about_____(take) a bus to school?【4】She ______ (not do) her homework every day.【5】It takes Tom two hours_______(finish) his homework. 答案：【答案】【1】is doing【2】is【3】taking【4】doesn´t do【5】to finish【解析】【1】句意：看！你妹妹正在做家庭作业。由Look!可知，本题的时态为现在进行时。其结构是：am/is/are+动词的现在分词。主语your sister是单数，因此be动词用is。故答案为：is doing。【2】句意：或者是你或者是他是对的。either...or...意如图，在ABCD中，E为边CD上一点，将沿AE折叠至处，与CE交于点若，，则的大小为________．