---- What did your son say in the letter?----- He told me that he _____ the Great Wall the next day.
----Where is my watch? I can’t find it. ----Don’t worry. It must be ______ in your room.
A lot of foreigners _______ familiar with the places of interest in China.
---What _________ to the building? ---It _________ when all the people were sleeping.
It’s raining so ________ that there are ________ any people in the street.
The book is _________ great value. It is well worth _________ twice.