Students are always interested in findingout ________ they can to with a new teacher

is known to us all is that the Olympic Games will take place in Beijing

There was enough evidence to prove that the explosionin Robinson’s house _______ the leak of natural gas.

oodtreatment,Lindaisbeginningto_________andwillsoonrecover

This is a cheap and simple process(过程), ____ ,there are dangers.