—Do you know________?—Sorry,I don’t know.A.if she will come to the concert or notB.whether she will come to the concert or notC.if will she come to the concert
There are ______ students in this school.
My mother often plays table tennis __________my father doesn’t like sports.
—________ does he often go to Beijing? —By plane.
–My brother’s never been late for work, ______? –______. He is a hard-working man.
---___________ ? ---It’s cloudy.