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When ___ help, one says “Thank you” while when _________ help, one asks “Can I help you?”
A.offered; offered | B.offering; offered |
C.offering; offering | D.offered; offering |
推荐套卷
.
When ___ help, one says “Thank you” while when _________ help, one asks “Can I help you?”
A.offered; offered | B.offering; offered |
C.offering; offering | D.offered; offering |