—Lucy, where is Mr. Wang?
—Hе ________ Beijing to attend a meeting.
has gone to
has been to
has been in
Humans can’t live _______air.
---Oh, you have a headache and a cough. _______have you been like this? ---Three days.
I prefer_____ to ______.
— I’m sorry for losing your book . — ______________
Well, if you take this medicine____________, you’ll be better soon.