—I'm sorry I didn't make it to your party last night. — __________. I know you're busy these days.
To tell ______ truth, he is at ______ loss what to do currently.
--Alice, turn off the light and lock the door before you leave. -- ______.
---How are you getting on with your classmates? ---______. I’ve got to know them all.
Rose is Mr. Smith’s secretary, so she has _____ to all his business e-mail.
It is reported that the United States uses ________energy as the whole of Europe.