David didn’t give up _________ he had failed in the experiment four times.

Mo Yan’s novels have been in great __________ since he won the Nobel Prizein Literature.

I am going to Sidney for further studies next month.– That’s fantasticCan you keep emailing me ______ you are there?

Guess what! I came across an oldfriend at the party last night.—________ I’m sureyou had a wonderful time.

He bought a book with the _____ 50 dollars and then his money _______.