---Bob has gone to California.
---Oh, can you tell me when he ____?
| A．left | B．has left | C．is leaving | D．would leave |
31. This painting to a museum in New York in 1977.
| A．sells | B．sold | C．was sold | D．is sold |
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 |