—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
— Is this maths problem ___________? — Yes, I can work it out ___________.
— ___________does your sister walk her dog? — Once a day.
— Would you like to climb the hill with us tomorrow? — If it ___________ ,I ___________.
— I bought a nice MP3 yesterday.It’s only$150. — Oh, really? I spent ___________ money than you .Mine is $120.
— Why don’t we go swimming tomorrow? — ___________.