Eating lunch at school is an option __________ by most state schools.

Jane Goodall started to study chimpanzees at the age of 26.

Jane Goodall has ________________________________________________________.

Circle the letter A, B, C, or D to indicate the best option for each of the following questions.

We can save our forests by limiting the demand________ trees, land for agriculture, materials for construction.

Generation gap is the differences in thinking and acting between two or more generations.

Giving money is a good way to support beggars.

We should use energy supplied by solar panels and other renewable energy sources so that we can reduce carbon emissions. (IN ORDER TO)

______________________________________________________________________.

The ________ of the cultural heritage should be discussed carefully. (SECURE)