1. _____ an electric light over the desk.
A. It is B. There is C. It has D. There has
2. There _____ water in the glass.
A. has not B. are no C. are not any D. is no
3. According to the periodic table. _____ still some elements undiscovered.
A. there seem to be B. it seems C. it seems to be D. here seems
