The 19th National Congress of the CPC(中共十九大)_____in Beijing last year.
Our country has been into a new era(时代) since then.( )
A.heldB.was heldC.has heldD.had held
—Peter, do you know if David _________us in the fashion show this Sunday?—I’m sure if he _________his homework, he will join us.
(2014)—Why didn’t you go to school yesterday? —______ my mother was in hospital and I had to take care of her. A. Then B. Because C. If
-When will you go back to your hometown? - _______.
—What will you do if it _______ tomorrow?—I will stay at home and watch the match on TV.
I wonder when they ___ for Beijing. I will go to the train station to see them off when they ___.