Thanks to the economical development, workers' wages have increased ________ as far as 200% in the recent three years.
Film has a much shorter history, especially when ________ such art forms as music and painting.
When ________ for his views about his teaching job, Philip said he found it very interesting and rewarding.
Even the best writers sometimes find themselves ________ for words.
—Someone wants you on the phone. —__________ nobody knows I am here.
I'm sorry I didn't phone you, but I've been very busy __________ the past couple of weeks.