. Do you know the man from ________ house the pictures were stolen?
The reason ____ the people in the mainland go to Hong Kong to buy formula is that people are not convinced ____the safety of formula produced in the mainland.
In order to keep fit, he chooses vegetables and fruit in ____to any kind of meat.
If you want to study in foreign countries, ____ good knowledge of the culture is regarded as ____ must for you to live happily.
-How would you like your coffee?-____.
As we all know, water ______ hydrogen and oxygen.