A growing number of people have ______ great importance to food safety.
| A．attached | B．devoted | C．paid | D．employed |
______ he has made up his mind, no one can make him change it.
| A．Once | B．Unless | C．Until | D．As |
I ______ him to give up smoking, and succeeded.
| A．persuaded | B．tried to advise | C．tried to persuade | D．suggested |
This is the first time that I ______ the song Gangnam Style.
| A．hear | B．are hearing | C．heard | D．have heard |
– Let's play football after class, shall we?
–______ I can’t wait to do that.
| A．Forget it! | B．Thank you. | C．Why not? | D．Not at all. |
I will not go to her birthday party ___________ I am invited.
| A．as if | B．only if | C．even if | D．if only |