13.The reason is____________ smoking tobacco causes illness.A. why B because C. that D. because of
Hearing the dog barking fiercely, away________.
Once you do it,you will feel that it comes easy.
— Tom is planning to buy a car. — I know. By next month, he enough for a used one.
to life imprisonment, Bo xilai lost all hope.
Mr. White is a careful and experienced engineer, so he is often to finish some challenging tasks.