As their memories decline, some old people tend to be talkative because they ______ forget what has just been said.
David apologized for _______to inform me of the change in the plan.
Jackson returned to Seattle for a while, ______ to Canada, and worked a few jobs there before heading for New York .
We were swimming in the lake _____ suddenly the storm started.
That is the only way we can imagine _______ the overuse of water in students’ bathrooms.
Some 200 people were reported ______ in the earthquake which happened in Sichuan last month.