Since we can't hear you at the back of the hall, you'll have to（）your voice.

In China,it is quite (nature)（） for people to go back home for the Spring Festival.

He（）for military service against the wishes of his parents.

Nobody knows how long and how seriously the shakiness（不穩(wěn)定） of big businesses will （） down the economy.

The weakening housing market continued to take its（）on the industry.