Choose the correct one.

1.If we want concrete proof, we are looking for ¾.

2.A lexicographer is a person who writes ¾.

3.Please ¾ sure your seat belt is fastened for take off.

4.¾ the formation of the sun, the planets, and other stars began with the condensation of an interstellar cloud.

5.The synonym of '$genesis^{\prime} is$ ¾.

6.¾ 1000 species of fish have been identified.

7.Farmers look forward to ¾ every summer.

8.Neptune is an extremely cold planet, and ¾.

9.It is important that the Admission Office ¾ your registration.

10.Unless you work hard, you will not succeed. Here, '$Unless^{\prime} is used as$ ¾.

11.When ¾ computer invented?

12.The antonym of '$diligent^{\prime} is$ ¾.