选择英文,将序号填入对应括号中。
(1)( ) (2)( ) (3) ( ) (4)( )
The doctor often tells him __________ more exercise.
You should ___________ your little brother when your mother is out.
Sometimes walking is __________ than driving during the busy traffic time.
My sister was born _____________ a Friday morning.
Mary is a student of___________.