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(A)  The bus is full of passengers.
(B)  The man with a cap is looking through the window.
(C)  They are shaking hands.
(D) The people standing are chatting face-to-face.

(A)  There are many houses at the bottom of the hill.
(B)  Trees have lost most of their leaves.
(C)  Smoke is rising from the chimney.
(D)  Many pipes are being installed.