—Lucy, where is Mr. Wang?
—Hе ________ Beijing to attend a meeting.
has gone to
has been to
has been in
—The party is a great success. We've had a good time. —______!
3D printers are still _____ expensive for most of us ______ afford.
The songs of the rock band sound ________.
Everyone passed the exam ________him. So he was sad.
I find ________ difficult to remember everything, though I’m still young.