--- Mr. Green, I think physics is too difficult for me. ---Tom, work hard, _______ you’ll find it not as difficult.

It’s too late to invite any more people. ______, you know how Tim hates parties.

They missed the school bus, _____ they were late for class.

--Why is she at Xiao Ying’s home?--_________ they are friends.

– Will you come to the wedding party? – I won’t come       Jenny          .