The students pretended_______ attentively when the teacher came in.
People in developed countries are supposed ____ more healthy food before than what they have today.
The engine of the ship was out of order and the bad weather _____ the helplessness of the crew at sea.
---It was careless ___ you to have left your clothes outside all night.--- My God! _____.
The factory has produced ____ computers as they did last year.
The population of this city is larger than ____ of New York.