Overpopulation is a terrible threat to the human raceYet it is probably ______ a threat to the humanrace than environmental destruction[ ]

The cakes are delicious. I’d like to have _______ third one as _______ second one I ate was too small.

The natural resources,such as mine,forest,and hydropower (水电) in that area have been ________. [ ]

The elephant’s legs are than the dog’s.

I have to go to work bytaxi because my car at thegarage.