begin began begunblow blew blownchoose chose chosendrink drank drank do did doneeat ate eaten fly flew flew forget forgot forgettengive gave given go went gone grow grew grown know knew knownsee saw seen show showed shown speak spoke spoken swim swam swum take took taken write wrote written come came come become became become run ran ran
Such exercises are often done by the students in class.
The bridge will be built next year.
This kind of tractor is made by that factory.