________, 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
He was about to tell me the matter _______someone stopped him
A. as B. while C. when D. until
