23A salty diet may increase the risk of stomach cancer ________ 10 percent, South Korean researchers found in a study of more than 2 million people

Only when I read the Frog by Moyan a second time _________ to appreciate his magic realism.

Would you like some milk –________.

The teacher propose that Jack ___ maths or physics instead ofEnglish because he was quick at numbers

I paid a fine of 200yuan for speeding If only I_________ the traffic rules!