The chairman asked many questions ________ the education 
of the homeless children in that area.
| A．concerned | B．concerning | C．to concern | D．having concerned |
30. You’d better take something to read when you go to see the doctor _______ you have to wait.
| A．even if | B．as if | C．in case | D．in order that |
29. _______ walk is expected to last all day, so bring ________ packed lunch.
| A．A, a | B．The, / | C．The, a | D．A, / |
28. Zhang Mingsheng, a farmer doctor of Nanping City, Fujian Province, _______murdered eight primary school students, was sentenced to death.
| A．that | B．who | C．which | D．where |
27. The town has a concert hall and two theatres. The _______ were both built in the 1950s.
| A．later | B．latter | C．last | D．list |
26. That warmhearted woman often helps ______ is in trouble.
| A．who | B．whom | C．whoever | D．whomever |