1/ i didn't go swimming yesterday
2/ the children are planting some trees around the school yard at the moment
3/ my mother goes for a walk with her friends at the park everyday
4/ nam and i didn't study hard in the last semester
5/ my father played golf with us yesterday 
6/ did you watch yv last night 
7/ yesterday morning we cycling around the school
8/ nam's brother doesn't brush his teeth regularly
9/ what did they have breakfast last monday 
10/ does he do judo twice a week
11/ my brother played volleyball very well when he was young 
12/ she didn't do her homework yesterday