𝗖𝗵𝗼𝗼𝘀𝗲 𝘁𝗵𝗲 𝗰𝗼𝗿𝗿𝗲𝗰𝘁 𝗼𝗽𝘁𝗶𝗼𝗻 𝘁𝗼 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲 𝘁𝗵𝗲 𝘀𝗲𝗻𝘁𝗲𝗻𝗰𝗲.
In 1939 the Second World War __________.

• started
• had started
• was starting
• had been starting