The world’s population is getting larger and larger, so scientists are trying to _______ new ways to solve the food problem.

If you want to change the world, you have to ______ yourself first.

 As soon as he ______ there, he couldn’t wait ______ the computer.

– Can we go hiking in the mountains next week? – It _________ the weather there.

There __________ still some milk in the fridge. It’s not necessary to go to the store today.