The young lady often makes meals ______ for herself for she is _____ about what she eats. 

—_____of Hangzhou has your brother covered since he came here?—About half of it, I guess

The Internet has brought _____ big changes in the way we work．

Drunk driving used to occur ________ in our city，but now such cases are rare.

It is ________ that he has been addicted to the drugs and has difficulty quitting it.