If China’s space technology has achieved breakthrough in this field, it really is amazing wonder.
My train arrive in New York at eight o'clock tonight. The plane I would like to take from there ______by then.
Many workers were organized to clear away remained of the World Trade Center.
The organization broke no rules, but ______had it acted responsibly.
A survey was carried out on the death rate of those who were infected by SARS, ________were surprising.
In recent years much more emphasis has been put______ developing the students productive skills.