A. The baby had been carried by the kangaroo in her pouch.
B. The baby was carried by the kangaroo in her pouch.
C. The baby was being carried by the kangaroo in her pouch.
D. None of these

A. The metal beams had corroded by the saltwater.
B. The metal beams were corroded by the saltwater.
C. The metal beams were being corroded by the saltwater.
D. None of these

A. The house was remodeled by the homeowners to help it sell.
B. The house was being remodeled by the homeowners to help it sell.
C. The house had been remodeled by the homeowners to help it sell.
D. None of these

A. The Eiffel Tower is visited by thousands of travelers every year.
B. The Eiffel Tower is being visited by thousands of travelers every year.
C. The Eiffel Tower have been visited by thousands of travelers every year.
D. None of these

A. Instructions are to be given to you by the supervisor.
B. Instructions will be given to you by the supervisor.
C. Instructions were given to you by the supervisor.
D. None of these

A. The comet had been viewed by the science class.
B. The comet was viewed by the science class.
C. The comet will be viewed by the science class.
D. None of these

A. Three dozen cupcakes will be baked by Courtney for the bake sale.
B. Three dozen cupcakes are being baked by Courtney for the bake sale.
C. Three dozen cupcakes have been baked by Courtney for the bake sale.
D. None of these