npulled out a gold watch, _________ were made of small diamonds

He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning system ____.[ ]

We shouldn’t spent our money testing so many people, most of ___ __ are healthy.

joy, the program teaching patients painting, dance, music and crafts is having _______ results through our consistent effort.

People have always been ________ about exactly how life on earth began．[ ]