When ¾ here?

1.The passage is about :

2.The correct spelling is ––––.

3.Since I ¾ for our lunch, I ¾ to attract the waiter's attention.

4.I ¾ at six o'clock, but ¾ to be up by five.

5.We ¾ a cat, but one day it just disappeared.

6.The antonym of “sporadic” is ¾

7.“Illuminate” means-

8.Why ¾ return the money?

9.High school students should not be ¾ as being immature or naive.

10.Albert Einstein's Theory of Relativity ¾ the foundation of the possibility of time travel.

11.Although the telescope ¾ into space in 1990, its inception was almost a half-century earlier.

12.There is still no way to wholly escape ¾ the effects on the layers of gases enveloping the earth.