航空器运行阶段是指

With the development of technology, robots are _______ human workers in some dangerous work.

I wrote to him two weeks ago, but he hasn＇t _______ yet.

I e-mailed my net pal last Sunday, but she didn＇t _______ to me.

I asked Tina where she was going, but she didn＇t _______ and kept on walking.

The blue dots on the map _______ public conveniences.

The word "love" can be _______ by a small red heart, which helps to show one＇s passion.

The Four-H Club _______ head, hands, heart and health.

If you _______ further information, please call the number or e-mail to us.

My students often tell me that I _______ a baseball star a lot in appearance, but I can＇t agree with them.

After three hours＇ blackout, the electricity was finally _______ to normal.