—I wonder how much you charge for your services.
—The first two are free（）the third costs $30.

单项选择题My parents don' t mind what job I do（）I am happy.

A. even though
B. as soon as
C. as long as
D. as though

单项选择题—What did you do with your car —I lost my key, so I had to（）it in the park.

A. lock
B. repair
C. leave
D. pass

单项选择题—It's $ 500, but that is my last offer. —OK, it is a（）.

A. cost
B. price
C. reward
D. deal

单项选择题—Could you look after my garden while I'm away —（）.

A．With pleasure
B．Hold on please
C．I agree with you
D．That’s a good idea

单项选择题课堂教学中，经常出现教师在学生不注意参与学习时突然加重语气或提高声调的现象，教师采用这种手段的目的是为了引起学生的( )。