When you _______________, you are involved in something that requires many people working together.

The _______________ of something uses a lot of water and energy.

When something is _______________ it has recently become very popular

The new student ______________ by the teacher.

Sandwiches ______________ here.

Seeds ______________ from the cotton.

A: Last year's clothes are too small for me now.

B: You _____________ give them to a smaller friend.

A: Look! I bought four T-shirts and got another one for free!

B: You ______________ them. You have too many already!

You _______________ your carbon footprint with a small change like this.

When you are______________ at something, you have practised it enough to be really good at it.

Many species developed the ability to _______________.

We ______________ the news but we heard it on the radio.

They ____________ many different devices before they found a stable design.

Our teacher wanted to know if we _____________ for the exam.

Leonardo da Vinci ______________ about flying since he was a child.

How long _________________ English before she went to London?

I ________________ in the wrong direction for an hour before I noticed my mistake.

I ________________ the bus for two hours when it finally arrived.

We _________________ basketball for only half an hour when it started to rain heavily.