A．Professor Zhang couldn’t be in the lab．
B．Professor Zhang forgot to turn off the lights in me lab．
C．Professor Zhang went home a long time a90．
D．Professor Zhang was the last one to leave the lab．
A．Jane will certainly be glad to hear about Bill’s promotion．
B．Jane has lost her job．
C．Jane probably won’t feel pleased with Bill’s promotion．
D．Jane should have got the promotion．
A．It is impossible for Toby to pass the exam．
B．He doesn’t know whether Toby will pass the exam or not．
C．Toby will certainly pass the exam．
D．Toby doesn’t know the way to the classroom．
A．It is more difficult than everyone says．
B．It is not interesting at all．
C．She doesn’t believe the course is difficult．
D．It is as difficult as everyone says．