英语练习题（选择填空、改写句子）
1 Peter and I are of _____ age.
A.the same B.a same C.same
2 How does a balloon rise into the air?（保持原意）
How does a balloon ____ ____ into the air?
3 We need air to survive.（保持原意）
We need air ________ us __________.
急！快给我答案