A、30. B、44. C、22. D、88. D

W: What has happened? It’s not like Bob to be late.
M: I am worrying, too. He said he would be here at 9:15. Now it’s 10:45.
Q: What do you know about Bob from the conversation?

W: It seems that more than 30 students have failed in the examination. It’s really a big number!
M: Yes, but you won’t be so surprised ff you know 44 students failed last year. That’s half of the class.
Q: How many students are there in the class?