-- The problem is too difficult, can you show me ______ , WangLe? -- Sure.
| A．what to work it out | B．what to work out it |
| C．how to work it out | D．how to work out it |
– I’m leaving for Beijing next week.
– How long ______ there?
| A．have you stayed | B．are you staying | C．had you stayed | D．did you stay |
______ 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. |