-- _____is that used for?---_____ the floor.
单项选择(每题1分)The stones each _____ as much as two tons.
单项选择(每题1分)Is this the reason _____ she explained in the report for her success in the job?
单项选择(每题1分)—Look, John’s fallen asleep at work!—Oh, he must have _____ late last night.
单项选择(每题1分)In his letter was his promise _____ he would spend the Christmas Eve with me.
单项选择(每题1分)—I can’t find my MP4 anywhere.—_____ it be in your handbag?