This book __________ ten units,__________ three main revision.
Jack couldn’t remember the exact date of the earthquake, but he knew it was ______ Saturday because everybody was at ______ church.
---My name is Annabelle. Shall I spell it for you? ---___.
Wind power is a source of energy we may return in the near future.
The committee is discussing the problem right now. It will _____ have been solved by the end of next week.
Here are some Christmas presents, ____you can choose one for yourself.