The outbreak we are battling is our common enemy. All must work together to________ a strongest global network of control and treatment that the world has ever seen.
A.do B.make C.change D.build
He needs a piece of paper to write ________.
A.on B.for C.in D.with
—Have you ever been to Hong Kong?
—Of course. Actually, I ________there four years ago, but now I live in Shenzhen.
A.have worked B.worked C.had worked D.would work
—Why is Grace so good at Chinese?
—Because she ________China for seven years.
A.has been to B.has gone to C.has been in D.has come to
My brother ________ the piano very well, but he hasn’t had time to play recently.
A.will play B.have played C.played D.plays
—It’s very kind of you to help me. Thank you very much.
—________.
A.That's right B.My pleasure C.With pleasure D.Don’t thank me
