Be careful, _______ you will make mistakes in your exams.–I know that, Mrs. White. One can never be too careful.

______ will you be able to reach the top of the hill — In ten minutes.

We’ll study in different schools next term. Enjoy your time in the new school!—__________.

know anything about China’s space program——Yes, ________ I know, China will send woman astronauts into space in the near future.

use a clock to wake me up because at six o’clock each morning the train comesby my house.[ ]