John and I _____ friends for eight yearsWe first got to know each other at a Christmas partyBut we _____ each other a couple of times before that

They arrived _____ Shanghai _______ a cold morning.

I think drinking milk is a good way ____. —Yes, I agree.

China’s 23rd Beidou Satellite__________into space on June 12, 2016.——As Chinese, we are proud of it.

It is in Qingdao _____ you’re going to pay a visit to _____ this kind of washing machine is produced.