She tried to_______laughing，but it didn’t work;the performer gave her an angry look at her.
| A．prevent | B．stop from | C．stop | D．keep |
–Mom, may I play the computer games for a while?
-- _________! Dad is in the study．
| A．Help yourself． | B．It’s up to you． |
| C．Behave yourself． | D．Go ahead． |
I don’t like the people who try to _____ you with how much money they’ve got．
| A．impress | B．show | C．press | D．strengthen |
_______ important advice father gave us the other day!
| A．What | B．What an | C．How a | D．How an |
My family consider ____ a computer, which is considered ____ a great help in our work and study．
| A．to buy; to be | B．buying; being | C．to buy; being | D．buying; to be |
We don’t allow _______in the office．But you are allowed _____ in the rest room．
| A．smoking; smoking | B．to smoke; to smoke |
| C．smoking; to smoke | D．to smoke; smoking |