The science of medicine, _______ progress has been very rapid lately, is perhaps the most important of all the sciences.

essor Smith, I’d like to take a gap year to Africa to serve in a global anti-Aids campaign.—Good idea, ______ you can afford the time.

When he is faced with a dilemma sometimes, he usually makes a/an ________ decision by throwing a coin.

It’s wrong for the salesman to ______ the old man of some money.

Cambridge is a small city ________ the east of England.