It was not _______she took off her glasses ______I realized she was my former classmate .
A．when; that B．until; that C．until; when D．when; then
The old man has expected to see all his children when he was in hospital, but ______ came to see him.
A．none B．no one C．someone D．anyone
David apologized for _______to inform me of the change in the plan.
A．his being not able B．him not to be able
C．his not being able D．him to be not able
Jackson returned to Seattle for a while, ______ to Canada, and worked a few jobs there before heading for New York .
A．moving B．moved C．being moved D．having moved
We were swimming in the lake _____ suddenly the storm started.
A．when B．while C．until D．before
That is the only way we can imagine _______ the overuse of water in students’ bathrooms.
A．reducing B．to reduce C．reduced D．reduce
