VERB TENSES

1.-Be careful. You .......................................... (hurt) yourself. 
2.-Do you know that guy? No, I ............................. (never/speak) to him. 
3.-What ........................................... (you/do) by this time next year?
4.-We missed the beginning of the play. It ............................ (start) half an hour before we arrived. 
5.-Right now they ................................ (work) on a new project. 
6.-Don't speak during the lesson or the teacher .......................... (get) very angry. 
7.-Don't worrry. I ........................... (pay) for the bill. 
8.-By this time next month, we ............................ (finish) our lessons and we .............................. (do) our university entry exams. 
9.-..................... she always ......................... (behave) so rudely?
10.-Next week our students .................................. (visit) the new museum. 
11.-Look at that car. It ........................... (crash)
12.-My sister ............................. (live) in London for three years.