Middle school students should be given enough sleeping time, __________they are busy preparing for all kinds of exams.

Excuse me! You can’t take photos here．Look at the sign. It says “NO PHOTOS”. —Sorry, I _______ it.

Are these your books—_______.

th Mr Brown _______ us, we willsurely make more progress in our oral practice

The second-hand car Tom bought was very cheap______ it was in excellent condition