When do you go to the music club? I go there ______ Saturday mornings. [ ]

They go to work early on workdays Saturday and Sunday. [ ]

All the students _____two groups by the teacher during the competition.

Now China has joined WTO（世贸组织）, so I think English is________ useful than before.

What do you think of the film acted by Jackie Chan? —-Oh, I don’t like it at all. It is very________.