单项选择题
A.Their business was given away free on the Internet. B.They gave CDs away free in shops. C.They played free concerts. D.They charged more for their CDs.
A.helping ensure the owner doing some exercises B.reminding the owner to take medicine C.communicating with the owner in a non-verbal way D.helping the owner recover from the illness
A.easy job B.tough task C.must-be job D.arranged task