So much of interest _______ that mostvisitors simply run out of time before seeing it all.

I’m sorry to keep you waiting for me so long.—_______

Mary couldn’t go to the cinema with us because she hadto _____ her little brother.

Mr. Johnson always carries a notebook, in which he_________everything that happens.

With trees and grass_____ about 35％ of the urban area，the city ofHefei has taken on a new look.