Many fantastic photos ______ during my last trip to Beijing.

• A. took
• B. are taken
• C. were taken
• D. will be taken

— Look, what an old palace! It looks so great!
—Yeah, it ______ nearly 800 years ago.

• A. was building
• B. was built
• C. has built
• D. is built

How ______ this accident______?

• A. did; happen
• B. was; happen
• C. is; happened
• D. does; happened

The boy ______ English on the radio when I ______ his door.

• A. learned...was opening
• B. was learning...opened
• C. learned...opened
• D. is learning... open

He ______ his leg when he ______ in a football match.

• A. broke, played
• B. was breaking, was playing
• C. broke, was playing
• D. was breaking, played