— Cindy failed in the writing competition. She must be in a bad mood. — Let’s go and .
— 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?— ___________ .