.In the near future, more advances in the robot technology _____by scientists.

I haven’t finished my homework yet. I      my mother with the housework all day yesterday.

It’s the second time that I          in Beijing. What great changes! It’s years since I
      here last time.

---I      for London to attend a meeting tomorrow. The plane      at 10:20 am.
---Have a good journey!

You     to ask the teacher if you want to hace a day off.

—What do you think of our country?
—Very beautiful.You know it is the first time that I    here.

Please don’t make so much noise.I     a novel.

一Did he notice you enter the classroom?
一I don’t think so．He _______ to the radio with his eyes shut·

—Did you notice my little son just now?
—No, Mrs Black. I ______ computer games.

They became friends again that day. Until then, they _____ to each other for nearly two years.