Most people think that English is ___________ usefullanguage, but some students think it’s ___________ unimportant subject.
Now there’s a system _________ the waste is disposed of using the principles of ecology.
He________ the pencil and began to draw the beautiful surroundings on a sheet of paper.[ ]
A mysterious illness, referred to as “ a typical phenomena”, has been brought under control, the government said on Wednesday, ______ no cause of it has been made public
Jack’s sister doesn’t want_______ the sports club. She doesn’t like sports.