robot的意思是（ ）

strive的意思是（ ）

security的意思是（ ）

By the end of this year, I（ ）enough money for a holiday. 

Joe（ ）the piano in a few minutes.

He dressed himself quickly and（ ）his schoolbag, went to school. 

There was a terrible noise（ ）the sudden burst of light．

The children wrote magical stories together,（ ）imaginary worlds of romantic and military adventure. 

He insisted that we all（ ）in his office at one o’clock.

What（ ）John（ ）by the time he broke up with his girlfriend?

China National Women’s Volleyball Team made great achievements,（ ）them a symbol of the spirit of China. 

I hear that all those houses in the street（ ）by the time you come back.

I have been studying here for four years, by next summer（ ）.

If I（ ）the money, I would have bought a much bigger car.

—What are you doing, Jack?
—Make a model plane. I（ ）it in the science class at 10 o’clock tomorrow morning.

—We are late because we took（ ）wrong road.
—You should be careful（ ）next time.

The two students talked as if they（ ）friends for years.

He（ ）to get her on the phone, but he didn’t get through it.

Until then, his family（ ）from him for six months.

（ ）today, he would get there by Friday.