10/ Rice is grown in tropical countries.
11/ Van has studyed English since 2012.
12/ His homework is done by him about two hours.
13/ You ought to change your lifestyle.
14/ Alice used to work for the Brown company.
15/ The soup is cooked by my mom.
16/ He told them to open the door.
17/ These flowers were watered by Lien in the garden yesterday afternoon.
18/ You have to finish this homework befor going out.
