The professor, ____ some of his assistants , _____ to attend our discussion.

______ is no doubt that the Rockets will defeat the Washington Wizards in the nextgame

It’s the protection for the trees really matters ,how many trees are planted each year .

How disappointing it was that I _____ the wonderful football match. [ ]

Maybe you have been to many interesting places, but nowhere else in China ____ such a beautiful place.