– Amazing! You _____ have won the first prize in the national English speech contest!– I’m lucky that all my efforts have finally paid off.  

 —Mum, would you please buy me an MP5 player?—If you can help do the dishes the whole vacation, you ________ have one as a reward.

 －Shall we go hiking this Sunday? －Sorry, I _______. I’ll have to take a piano lesson.

—Must I go to the shop with you，Mum?—Err... I can make it myself，Mike. You         go with me.

--- Will the new iphone cost a lot?--- I ________ think so. Apple’s products are usually expensive.