We must work hard. There _______an important exam in June.
--- Do you know when he tomorrow?--- Don’t worry. I think as soon as he , he will give you a call.
A woman was found _____ in her house this morning. The police said she was attacked with a knife and bled to _____.
Life on Mars will be better than _____ on Earth _____ many ways.
My father told me _______.
Scientists from different countries are trying to_____ a good way to solve the energy problem.