This is ______ eraser. ______ eraser is in the pencil box.

I________ you for a long time. –Oh, I_______ in Beijing. I’ve just come back.

u know ____ made him successful in his career—Yes. His hard work and determination, of course.

The weather is ______ in London, andumbrellas are very popular.

___ we know, in a chemical change, energy cannot be created, ____