Someone is ringing the doorbell. Go and see _____.
______ hearing the news of the success, he opened his mouth wide, and then had a big smile on his face.
— Betty got sick for a while, but she’s much better now.— ______
New technologies have made possible to turn out new products faster and at a lower cost.
The audience when they watched his funny performance.
Every day we are using so many raw materials which _________that they _________.