This painting of his had been ____________ by some experts of the world.
| A．high thought of | B．well thought of |
| C．highly thought | D．good thought |
________, it began to rain unexpectedly.
| A．While cleaning the machine |
| B．To clean the machine |
| C．He was cleaning the machine |
| D．While he was cleaning the machine |
Several rounds of air and ground attacks from the allied force left the whole city _______.
| A．in pieces | B．in ruins | C．in part | D．in place |
It is the third time that he ____ abroad on business this year.
| A．goes | B．went | C．has gone | D．go |
Thousands of works of art, ________ the most famous paintings, were ________ during the war.
| A．included; missed | B．including; missing |
| C．included; missing | D．including; missed |
Here is the girl _________ school bag has been stolen.
| A．who | B．whom | C．whose | D．which |