Recently, a team of eight medical experts has arrived in Shanxi Province to help to the latest vaccine incident.

Don’t you know that a proper amount of exercise a day will ________ to a person’s health—No wonder so many senior citizens do exercise in the square

I am waiting for my friend. ,I will go swimming alone.

Students used to_____ information from newspapers or magazines, but now they are used to ______ for it on the Internet directly

So sudden ________that the enemy had no time to escape.