Can you tell me why you learn English so well— It’s very simple. ______ you study, _______ grades you will get.

Would you please tell me_________— In a small village near Niingbo.

It was in the lab ______ was newly built ______ they carried out the experiment.

Sometimes the police are not absolutely sure that someone has committed a crime, but ________ him of having done it.[ ]

the teachers in their school is about 200 and one fourth of them are teachers.