It is necessary that he return the dictionary immediately.
It is necessary that study facilities of salt manufacture in vacuum be corroded in brine of hight temperature.
It is necessary that drilling vessel is capable of standing still under the action of ocean current wave surge tropical storm and internal wave current in winter.
It is necessary that the children should obey you.
It is necessary that society should look at these things, because it is itself which creates them.
The absolute should be practicable. It is necessary that the ideal should be breathable, drinkable, and eatable to the human mind.
It is necessary that we should use a short-wave radio to pick up the programs.
It is necessary that China's current legal institutions of enterprises, tax law, securities law be adjusted in order to promote the smooth development of risk investments in China.
It is necessary that the server (Jetty, for example) is already running and that the project area has already been created.
It is necessary that we do this in our construction.
It is necessary that we weigh the pros and cons of including English words in Chinese dictionaries.
