— Li Lin hasn’t turned up yet, but he promised to come to the party.— He ______ home. He is a man of keeping his word.
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The sight of the big cake on the table suddenly _________ me that it is my birthday today.
This produced a chain reaction, _______ made _______ possible for life to develop.
The thought they couldthe whole continent was exciting.
_________ life will continue on the earth for millions of years to come will depend on __________ this problem can be solved.