I have been working with Lily for years, and never before her so serious!
Don’t ______ personal information such as your name, telephone number and address until you feel comfortable.
The first decade in the 21st century is the one ______ many significant advances are made in China.
—Hey, dad. ______ —I can’t find my glasses.
—Do you know Tom came _____ third in the marathon held yesterday? —Yeah!And it was _____ 18-hour bicycle marathon.
With a lot of difficult problems ____, the manager felt like a cat on hot bricks.