—It is said that _____ the young people may lose their abilities to hear after five years if they listen to MP4 players which are too loud for more than five hours a week.
A. thousand of B. six thousand C. six thousand of
Sarah always makes her son ________ his hands before eating.
| A．wash | B．washed | C．washing | D．to wash |
You won’t have the chance to succeed when you ________.
| A．gave up | B．give up | C．will give up | D．are giving up |
Don’t talk to me. My favorite pop star ________ on TV now.
| A．is singing | B．will sing | C．sings | D．sang |
--- ________ do you help your mother clean the house?
--- Once a week.
| A．How far | B．How long | C．How soon | D．How often |
Tina ________ England with her parents three years ago.
| A．visits | B．visited | C．will visit | D．has visited |