If in wet sand, the vegetables can fresh for a long time.
| A．being buried；remain | B．buried；be remained |
| C．buried；remain | D．burying；remain |
By improving reading skills, you can read faster and understand more of______you read．
| A．that | B．what | C．which | D．Whether |
_______parents say and do has a life-long effect on their children.
| A．That | B．Which | C．What | D．As |
Choosing the right dictionary depends on ______ you want to use it for.
| A．what | B．why | C．how | D．Whether |
Having checked the doors were closed , and _________ all the lights were off, the boy opened the door to his bedroom.
| A．why | B．that | C．when | D．where |
It is none of your business _____ other people think about you. Believe yourself.
| A．how | B．what | C．which | D．when |