`8.` `->`Should milk be drunk by the old people everyday?
Cấu trúc: Modal verbs + S + be + VpII/V-ed + (by + O)?
`9. ``->`The letters don't sent to me by Lan every month.
Cấu trúc: S + be (not)+ VpII + (by + O)
`10.` `->`This bottle can be used to get milk.
`11.``->` Can this test be done by you?
Cấu trúc: Modal verbs + S + be + VpII/V-ed + (by + O)?
`12. ``->`The problem can't be solved by my sister.
Cấu trúc: S + model verb + be + VpII + (by + O)
`13. ``->`Many accidents are caused by careless driving.
`14. ``->`Are meals cooked every day by your mother?
Cấu trúc: Am/ is/ are + S + VpII/V-ed + (by + O)?
