In the US, students can do almost anything they want in class, ____ they don’t make too much noise or disturb others who want to learn from the teacher.
When he rushed there, he found a man ________ on the road, ________.
— You couldn’t have chosen any gift better for me. — ________.
It is believed that movies, also ________ motion pictures, were introduced into China near the end of the 19th century.
It’s reported that most of the lakes and damaged dams were safe but the risks of heavy rain and aftershocks ________.
________ we stand; ________ we fall.