put in the present perfect or past simple of the verb in brackets
1.Mai...(buy) a new dress last month but she ....(not wear)it yet.
2.Mr.quang ...(teach) Maths in this school since he ....(graduate)from the university in 1989.
3..... you....(hear) about agatha Christie?She....(be) a writer who .....(die) in 1976.She...(write) more than 70 detective novels......you.....(read)any of them?
