_________is she?  She is my sister.

—_____ does your brother go online?  —Let me see. Maybe two or three times a week.

Hurry up , ________you will be late for the meeting.

—Amanda, you look tired today. What’s wrong?—I worked______ late ______ I didn’t go to bed until midnight yesterday.

—Shall we go to the Great Wall on National Day?—It’s a great idea ，__________we don’t have enough money．