Some of the students have already learned enough English to ____ a conversation with a native English speaker.   

Now the People’s Liberation Army is _______ very modern weapons, which no one dares to look down upon. 

Once the poison is _____ , there is no further danger.

Fu Mingxia _______ the Sydney Olympic Games, where she _________ all the other competitors and got the gold medal in the women’s 10-metre platform．

We students are supposed to know how we should ourselves to surewe are in the proper mental state.