语法填空训练(15)

Several men hit the Sao Paulo Museum of Art just before dawn on Thursday, December 20th, 2007. Authorities said that    1   thieves must have been well prepared, as     2    took them just three minutes to steal paintings    3   two world-famous artists, Pablo Picasso     4   Candido Portinari, which are worth millions of dollars. Images from the security camera show that three men began their action at 5:09 am,     5    the guards in the museum were going through their shift change (换岗).

They broke through two glass doors,    6    (run) to the museum’s top floor and grabbed the two paintings from different rooms, somehow    7   (avoid) nearby guards. The alarm never rang, and by 5:12 am, they were making their escape. After that, the police were interviewing the 30 museum    8   (employ). “Everything indicates the thieves were sent to do it by some wealthy art lover for    9    own collection. He was not rich enough to buy the paintings,   10    he was wealthy,” said the lead police officer, Marcos Gomes de Moura.

Keys:

1. the          2. it              3. by       4. and            5. when       

6. ran      7. avoiding     8. employees   9. his   10. though/although