Almost everybody has sensed that Dave cares most about money     the surface．

 It was because it had been raining for several days, leading to a flood over the fields and the villages that many people fell _______ without foods and shelters.

“How long have you worked on the farm?” “_________ the end of last year.”

Thirty computers have been sent to the school       some other new teaching equipment. 

The form cannot be signed by anyone ______ yourself.