——I’d like to invite you to a concert this evening.
——Thank you, but I’ll be free I’m not sure at the moment.
A、whileB
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While building a tunnel through the mountain,_________.
——I’d like to invite you to a concert this evening.
——Thank you, but I’ll be free I’m not sure at the moment.
—DidyougiveyouriPhone6toMary?
—__________.Ijustlentittoher.
Bornintoafamilywiththreebrothers,Davidwas________tovaluethesenseofsharing.
—Would you mind opening the window ?
— ________.