Outer space ________________(not explore) by people 50 years ago.
举一反三
- Why is the journey to the outer space not a dream any more? A: Because people can go anywhere now. B: Because people can travel to the outer space by airplane now. C: Because the modern means of transportation makes the journey smoother. D: Because people can travel to the outer space by rockets and space shuttles.
- When was the man in New York A: About two years ago. B: About one year ago, C: About three years ago.
- People thought of adolescencehundreds of years ago.
- We each other since known; ten years ago. A: have known; ten years ago B: knew; ten years ago C: have known; ten years D: knew; ten years
- What does the Egyptian hall look like to the customers? A: A Chinese building from 4,000 years ago. B: A British building from 5,000 years ago C: An Egyptian building from 4,000 years ago D: An Australian building from 4,000 years ago