Had he spent more time practicing speaking English before, he _______ able to speak it much better now.
This disaster ______ that people had no knowledge of first aid and they hadn’t known how to protect them-selves in face of danger.
The train had left, so we could do nothing but ________ another.
_________ computer games, his parents were very worried about his study.
. So seriously _____ in the accident that he was sent to hospital at once.
Though he had tried to climb to the top of the mountain several times, he didn't__________________.