Some experts are warning that the step the US government has taken to deal with the current crisis is ______ of much risk.
It is said that the temperature is unusual mainly ________ global warming caused by human activities.
—Does it rain a lot in this area?—________, it hardly ever rains; the climate is like that of a desert.
Look! Here is our new flat. We can get a wonderful ________ from our window.
It was last year ________ you taught me how to drive.
My mind ________ just now, so I didn’t catch what he said.