Dear me! What a beautiful computer!—My grandma bought ___for my sister and me. It’s ours.

I met a friend of mine _____ in the park yesterday.

Pollution is a serious problem. Scientists have _____ some good ways to save it.

did your sister work in that hospital?—For two years,then she moved to the south.[ ]

I hear there’ll be _________ talk on teenage problems next Monday. —-Do you mean __________ talk our teacher asked us to listen to?