Question

1)They need to concentrate ___ their studies.

2)At Cambridge University there was _____ conference consisting of some of _____ most celebrated biologists in _____ world.

3)The course encourages students to think critically ___ development.

4)You will study the important causes ___ environmental change.​

Answer 1

1. on

2.a,the,the

3.on

4.on

I wish this help you

Explanation:

please mark me as brainliest

Answer 2

Answer:

well hi

if i'm ur giraffe think i'm still higher than u

and that was a song

-_-#