Nature Around Us, parts 2.3 and 2.4

I know this not by ____, I'm a professional.

I came ____ with ideas about solving ecological problems

It's necessary ____ paper and glass trash

We were ____ about this awful natural disaster over the radio

Every person must make ____ to the Earth's health

Scientists have been trying to solve nature’s ____ for many centuries

It is better to do it slowly _____ make a mistake

I'm studying English ______ more job opportunities

We bought more T-shirts ______ everyone could have one

He set his alarm ________ remember to phone to his doctor

I'm training very hard _____ improve my personal best time

She bought an electric oven _____ baking cakes