On account of the development of theeconomy, the environment is seriously polluted and we must ________ the emission of the carbon dioxide. [ ]

The book, which ____ for children under 10, was ____ with adults readers.

Miss Li is a good teacher. She always uses games to make learning ___________.— That’s for sure. I like her classes very much.

“You ______ your teacher for help He iskind-hearted” “Yes A whole day _______”

____ into consideration, theybelieved themselves more and returned to their positions.