---Why does Maria look so tired?---She missed our school bus, ______she had to walk here all the way.
Jack and Kate came back 2 hours ago. But _________ students in the class aren’t here.
---Whose book is it?---look! Jane’s name is on the cover(封面). It _________ hers.
His father often ___________to work.
---How are you? ---I’m not _______________.
This is my new pen. Let me ________________.