There are______ living things on the earth. We must value our home—the earth.A. millions B. million ofC. millions of
He never____learning English.That was why he was successful at last.
—Would you mind________the window? It’s a bit cold. —_________.
He explained________why he didn’t come to our party yesterday.
This book is not_______for a six-year-old child to read.
You can________the cake_______ten pieces.