We were told not to touch the equipment in the laboratory unless .

________ great progress you’ve made! You parents mustbe proud of you.

Do you like to play _____ping-pong orplay _____guitar—Ping-pong.

Could I _____ your iPad, Alice—–Of course. Here you are.

The success of Shenzhou-X spacecraft that the Chinese people have taken the historic step in the advance of climbing up to the peak of the world’s science and technology.