—The project wasn’t’ difficult for him, was it ?— . He should have been given a more difficult one .
Obama and his officials are trying to ______ the serious problems from the financial crisis.
The employee must have been dismissed by the employer last month, ____ he?
Tim Bemers-Lee is generally considered ____ the World Wide Web, on which all the information is shared by all.
--- Have a nice weekend! ---Yes._____.
_____ wants to study well must learn things _____.