Mr. Liu is very ______ with his students as he always tries to make his classes lively and interesting.

Seen from the top, the stadium looks just like a bird’s nest    of tree branches.

—How is your recent trip to Sichuan?—I've never had ________one before.(2011·四川)

Having retired from work, he is        with the welfare(福利) of the disabled.

(2013·浙江高考)Mary worked here as a ________ secretary and ended up getting a full­time job with the company.