同义句：If your mother doen't let you go ,you will have to stay at home.------ your mother ------ ----- ------ ,you will have to stay at home.His brother helped him finish making up conversations .He ------ making up conversations ----- ----- -

Question

同义句：
If your mother doen't let you go ,you will have to stay at home.
------ your mother ------ ----- ------ ,you will have to stay at home.
His brother helped him finish making up conversations .
He ------ making up conversations ----- ----- ----- ----- his brother.
Everyone should do his best to care for our "mother earth"
Everyone should ------ ----- ----- to care for our "mother earth"

Answer 1

1.Unless your mother let you go
unless=if...not
2.He finished making up conversations with the help of his brother.
with the help of +sb./sth.在...的帮助下,借助于...
3.Everyone should go all out to care for our "mother earth"
go all out全力以赴