The science of medicine, _______ progress has been very rapid lately, is perhaps the most important of all the sciences.
—The kind-hearted lady is popular with her neighbors, right? —Yes, she is ready to help others without expecting anything __________.
Nowhere else in the world __________ more friendly people than in China.
Come and see me whenever __________.
The school has __________ a special class to help poor readers.
Eating too much fat can __________ heart disease and cause high blood pressure.