It has been announced that all the students ____ put on masks before going to school in case they are infected with SARS virus.
Mike insisted that he _____ nothing wrong and______ free.
Only with the greatest of luck_______ to escape from the rising flood waters.
They decided to cycle along the Mekong River from_________ it begins to ______ it ends.
_____________they visited the Science Museum, they showed great interest in everything they saw.
It’s a long time______ they separated,but it won’t be long_____ they meet again.