by a greater demand of vegetables, farmers have built more green houses.

It remains       whether Jim’ll be fit enough to play in the finals.

I feel like ________to Europe _______ a visit next summer vacation.

How did you manage ___________ their approval?

There are various performances ______dancing and singing in the party.

After supper Wang Wei put her head down on her pillow and went to sleep but I stayed _______.

The film ________ a novel ___________ by Robert James Waller called Bridges of Madison County.
A is based on; written         B base on; writing
C base on; written            D is based on; writing

Or are you afraid that your friend would laugh at you, or would not understand what you are ________?

Peter hurried through dinner, changed into old clothes, _______ in the lab for three hours.

The project, ________ in 2009, has expanded the city’s cellphone network to cover one million users.