—Sorry for the delay.I got lost in the mountain.—That's OK.You're safe and that's what________.
You can only be sure of __________ you have at present; you cannot be sure of something __________ you might get in the future.
A warm thought suddenly came to me __________ I might use the pocket money to buy some flowers for my mother’s birthday.
These shoes look very good. I wonder __________.
—What did your parents think about your decision? —They always let me do __________I think I should.
Nobody believed his reason for being absent from class__________he had to meet his uncle at the airport.