Not until all the fish died in the lake __________ how serious the pollution was.
When _____ to hand in his homework, Philip told his teacher that he had left it home.
It was ______ that I didn’t like to leave my room.
In his new book, the writer _______ his memories of village life.
I’d appreciate ______if you would give me some advice on English learning.
John thinks it won’t be long ______he is ready for his new job.