I ______ tell you with certainty that he won’t be able to finish it before the deadline.
Our school has a library and it ______ more than one million books.
---Good evening. ______ ? ---Yes, that’s right. We’d like a table on the side.
______ different life today is from ______ it was fifty years ago.
The driver was at ______ loss when ______ word came that he was forbidden to drive for speeding.
My sister ,_____ my family are proud, was admitted to Tsinghua University last autumn.