301. In the middle of last century planes began to be used to transport both passengers and goods. The underlined words means ____.
During your English study, you will______ many difficulties.
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.