1. My mom told him to buy a ticket

2. He asked her where she was doing

3. He asked me which i had bought mobile phone

4. I told her to buy some fruits

5. She told to us not to try to get it then

6. I asked her if it was going to be a round day

1.C        2.B       3.A      4.C      5.A      6.C        7.A       8.A      9.D       10.C 

11.C      12.C      13.A

D

TCN: y= a/c= 1/2   

=> đáp án A