______ I always felt I would pass the exam, I never thought I would get an A.A. While B. Unless C. If D. Until
Luckily, the poor boy had enough money _____ he could buy a train ticket.
________, it began to rain unexpectedly.
Several rounds of air and ground attacks from the allied force left the whole city _______.
It is the third time that he ____ abroad on business this year.
Thousands of works of art, ________ the most famous paintings, were ________ during the war.