Among the four underlined letters, which one has the different pronunciation from the other three?A. boss B. police D. cotton D. nod
-----Is Henry cleaning his room? ---- ________ .
-----______ are the students talking ______? ----- A policeman.
It’s four o’clock in the afternoon. The boys __ in the pool.
My friend works ___ a hospital ___ a doctor.
He ______ his uniform every day. It’s _______ beautiful.