1.
They (clean) the beach one week ago.
.
2.
They (collect) hundreds of books so far.
.
3.
I (collect) stamps when I was a child.
.
4.
She (fly) to Da Nang many times but last year she (go) there by train.
.
5.
You ever (see) a real lion? No, but I (see) a real elephant when we went to the zoo last month.
.
Loga
Sinh Học lớp 12
