（ ）Sorry,Frank.I'm busy today.I can't go swimmi（ ）Sorry,Frank.I'm busy today.I can't go swimming with you.__________A.No problem B.You're welcome C.That's all D.Never mind

（ ）Sorry,Frank.I'm busy today.I can't go swimmi（ ）Sorry,Frank.I'm busy today.I can't go swimming with you.__________A.No problem B.You're welcome C.That's all D.Never mind
（ ）Sorry,Frank.I'm busy today.I can't go swimmi
（ ）Sorry,Frank.I'm busy today.I can't go swimming with you.__________
A.No problem B.You're welcome C.That's all D.Never mind

（ ）Sorry,Frank.I'm busy today.I can't go swimmi（ ）Sorry,Frank.I'm busy today.I can't go swimming with you.__________A.No problem B.You're welcome C.That's all D.Never mind
D