___in doing so,created work pants for the cowboys of...空格填什么

Please ___when the work will be finished.这空格应填什么?A:look for My brother wants to be a bus ___in the future.空格填什么? Half of the students_______(are doing)the work at present,so l hope you will excuse me for _____ so late 空格应填什么? This pair of pants _20.50 yuan.空格处填is 还是are? ( ) of the women ( )doing the dishes.填什么? he was the only of the boys who ___late for school 为什么空格填is不 为什么 Maria spent two hours (doing) the work 填doing It's easy ( )the work.A.to doing B.of youto do C.for you to My mother ___in a shop.She ___at work now.该填什么? 选择because,because of ,so 填2个空格!急 I offen hellp my mother____(do;doing)the house work.横线上填什么?