The Mona Lisa is a world-famous painting. The woman in the painting wears a smile on her face.She    26     to be the wife of a rich Italian. Leonardo da Vinci began to paint it in 1503 and finished itfour years later.       The painting   27   in the national museum in Paris since 1797. However, one night in 1911, it was stolen by a worker from the museum. Two years later, the worker   28    in Italy when he tried to sell the painting. Later, it was returned to the museum.        Now, the Mona Lisa   29     behind thick glass in the museum. Millions of people around the world come to see this famous painting each year. However, few people notice one important thing－the smiling lady appears   30     no eyebrows. (眉毛)
【題組】26.
(A) believes
(B) believed
(C) is believed
(D) has believed