China has launched another man－made satellite，________ isannounced in today’s newspaper

Scarcely _____ raining _____ the PLAfighters started on their way again

It is vital that we _____ act out at once to protect the environment.

octor, I spend most of the time with my patients, and that’s ______ it is in my day.

The Australian boy has a good ________ of Chinese and can communicate with others freely.