. —Why are you so frightened?—I saw two dark _______ enter the building.
Only after a person has realized the importance of knowledge, ____________.
I was fortunate to pick up a wallet ______ on the ground, but unfortunately for me I found my color TV set _______ when I got home.
The judge paid no attention to ________ he had just lost his wife.
When ________ in the sand, the plant grows close to the ground, ________ narrow leaves and small flowers.
They ________ on the program for almost one week before I joined them, and now we ________ on it as no good results have come out so far.