The following text is for questions 6 to 11. 

It was early in the morning when five staff of the charity International Animal Rescue (IAR) arrived at the forest. The forest was hazy with smoke. They breathed through cloth masks as they searched for a dehydrated--and possibly dying-orangutan and her infant seen the previous night. A farmer reported seeing the mother and daughter orangutans near a palm oil farm which was on fire.

    After several hours searching through the haze, they finally found the pair. They used anesthetics and medical checks-ups to determine if the two orangutans could survive in a safe zone away from the fires. These orangutans were lucky because IAR got them before the smoke caused too much damage. The team took them to a safe zone on the island.

7. "After several hours searching through the haze ____" (paragraph 2)

The underlined word has a similar meaning to ____