IELTS 6.0: PROCESS-PASSIVE VOICE

First, used bottles are (put) _______ in the plastic recycling bin.

Next, the used bottles (collect) ________ and (take) __________to the factory which will recycle the bottles.

Following transportation, the bottles (heat) _______ and (melt) _______.

Then they (form) _______ into new bottles.

After cooling, the recycled plastic bottles (distribute) ________ to companies in order that they can (refill) ________and sold to the public.

Cement (make) _____ from a number of ingredients.

The primary ingredient of cement is limestone. Limestone (form) ________ millions of years ago from dead sea creatures.

It (extract) ______ from the ground.

After it arrives, it (crush) ______. Then, it (heat) ______ to a high temperature with various other ingredients.

Following this, cold air (cool) _____ the limestone mixture down into cement.