Where are my keys? I must __________.
Mr Li teaches ______ English five times a week.
-_______ Lucy come from Yangzhou? –No,she _____ from Yangzhou.
—Hi, Daniel. Let’s play football after school. —But we don’t have football now.
--- Do you know the workers built _______180-metre-long bridge over the river?--- Really? That’s amazing.
--- Can you help me take these books to the office?---_______.