natural parks are important forpreserving animals, which would ________ risk dying out

_____ cold weather, the workers are still working at the working site.

Hearing her mean words，I stood there trembling and trying to ________ tears.[ ]

ering his poor health condition, the doctor insisted on his_____a good rest before going back to work

Mum, thank you for ____ me ____ on the trip with my classmates! –Have a nice trip!