After an art show ________ (open) in New York, it was discovered that someone
_________ (hang) a famous painting by Henri Matisse upside - down.

1.   ?    opened, hanged
2.   ?    opened, hung
3.   ?    had opened, had hung
4.   ?    opened, had hung

In 1960, a Turkish diver ________ (discover) the remains of a 3000 year old ship while he _______ (dive) for sponges of the coast of southwest Turkey

1.   ?    discovered, dived
2.   ?    discovered, had dived
3.   ?    had discovered, had dived
4.   ?    discovered, was diving

A big earthquake ______ (strike) central Taiwan in 1999. Such a dangerous earthquake _________ (not strike) the area for many years.

1.   ?    striked, didn't strike
2.   ?    struck, hasn't struck
3.   ?    struck, didn't strike
4.   ?    did strike, hasn't struck

In 2003, Italian workers _______ (find) important archaeological remains while they ___________ (construct) a new parking lot in Vatican city

1.   ?    found, constructed
2.   ?    had found, constructing
3.   ?    had found, constructed
4.   ?    had found, were consrtucting
5.   ?    had found, had constructed