Either you or he _______ to give them a lecture tomorrow.

Either Jim or I  ____ going to help the farmers with the orange harvest this afternoon. 

The population in our country ____ very ________. 80% of the population ______ farmers.

Two-thirds of the land ________ covered with green grass and the rest _______ covered with pine trees.

A poet and artist ______ coming to speak to us about Chinese literature and painting tomorrow afternoon.