This book is than mine.
A. good B. gooder C. better
Leaves change ____________ fall.
A. in
B. at
C. on
Can yellow leaves ____________ food?
A. makes
B. makeing
C. make
Leaves must ____________ green to make food for plants and trees.
A. is
B. be
C. are
They ____________ sunlight，air，and water.
A. need
B. needs
C. needes
What do they need ____________ food?
A. to make
B. make
C. making