The most widely accepted theory about the beginning of drama is based on the concept ______ drama evolved from ritual.
| A．which | B．that | C．when | D．as |
__on a chair, he read an interesting storybook.
| A．Sitting | B．To sit | C．Sat | D．Having sat |
All the students suggested that they __________ two weeks to prepare for the exam.
| A．give | B．should give | C．be given | D．would be given |
______ is reported that many young people go to big cities to earn money.
| A．This | B．That | C．It | D．As |
My favorite film star is Jack Cheng, performances always make people laugh.
| A．whose | B．as | C．which | D．why |
The building which _____ now will be our science laboratory.
| A．is being built | B．will be built | C．is built | D．has been built |