My mother isn’t in, I must ___ my sister at home.A. look at B. look after C. look up
---________? ---He’s friendly and helpful.
Excuse me. I _________ I was blocking(挡) your way.
Few of them wanted to take a bus there, ___________?
--- Are you _______ American or English? --- English. We both work in Yangzhou.
—_________? —He’s friendly and helpful.