题目内容：

1把下列单词改为过去式和过去分词 过去分词和过去式都要有!
begin
blow
choose
drink
do
eat
fly
forget
give
go
grow
know
see
show
speak
swim
take
write
come
become
run
2把下列句子改为被动语态
The students often do such exercises in class.
They will build the bridge next year.
That factory makes this kind of tractor.
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优质解答

begin began begun blow blew blown choose chose chosen drink drank drank do did done eat ate eaten fly flew flew forget forgot forgetten give gave given go went gone grow grew grown know knew known see 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.