He is tall, _____ his son is short.
A. or                     B. while                  C. and

________the workers were quite tired, _______ they still went on working.
A. Because; /                  B. Although; but           C. Although; /

–May I go to the concert with you?
– I’m afraid not ______you have a ticket, because I have only one.

–Kate, do you know ________ it is from here to the gym?
–About twenty minutes’ walk.

_______ you do, don’t miss this exhibition, for it’s so hard for me to get the tickets.

--- I can’t fall asleep.
--- You get up and try to do something ______lying in bed.

_________Jimmy knows he may fail, ________he will still try.

Never eat food that stays over night,           it tastes         .