——I think the book is as interesting as it is instructive．—— It could never be____．It is well worth reading．

I need one more stamp before my collection _______.

The lady said she would buy a gift for her daughter with the         .

After two years’ research, we now have a ________ better understanding of the disease. 

Wouldn’t it be ____for you to pick me up at five o’clock and take me to my company？