It was not until the end of the meeting_____________.

Watching Xiao Shenyang perform in a funny manner, the audience _____ laughter from time to time.[ ]

past few years, research hassuggested that Vitamin D may increase the level of serotonin, one of the keynurotransmitters influencing our mood, and ________it helps to relieve mooddisorders.

These shoes look very good. I wonder _______. （2006年上海春季高考题）

Finally, people found computers ________.