_____ China’s reform and opening up in late 1978, its quick development has aroused worldwide attention, which has made America anxious about it.
The Chinese language differs from many Western languages ________it uses characters which have meanings and can stand alone as words.
It is often that human beings are naturally equipped to speak.
By the time she reached the corner of the street, the footsteps _________.
As Polly observed the passengers on the train, she _______that she was being watched by a tall man in a dark coat.
Kathy ______ a lot of Japanese while working with some Japanese engineer.