​Complete each of the following

​Complete each of the following sentences with a (compound) word derived from the one(s) given in brackets. 

When he reached home, he found his family sitting in the living-room（ ） ,staring at one another.(speech)

当他回到家，他发现他的家人坐在起居室里没人说话，互相凝视。speechless不说话的，形容词。