25.His daughter is always shy in_____ and she never dares to make a speech to_____.
Most students think this book is useful as it ____ all the basic grammar rules they need to know.
--- I apologize for not being able to join you for dinner. --- ______.
The jewels that the rich lady was wearing that evening must be ______.
When you go abroad for further study, you should learn to adapt to the ______ of the destination country.
How long do you think ______ the Microsoft brings out a new product?