I tried hard to get some information about the new technology out of his mouth, but he remained____________.
Hiking by oneself can be _______ and good for health. It may also be good for_______ training.
Though _______ abroad for years, many Chinese still ______ the traditional customs.
In winter, the town is often _____by snow.
His subtle acting made _________ people laugh, feeling more _______ their lives.
Farmers here _________keeping the soil rich and _________diseases.