As adults, we should stay calm_____ challenges we come across in work.

Mr. Li makes me ____, because it is bad for my health.

Experiments of this kindin both the U．S．and Europe well before the Second World War

My son want a pet rabbit for long, but I have no time to buy ______ for him.

Oh, you look so beautiful in the red shirt. It’s in style.—Thank you. I bought it in Huangshang Supermarket last Saturday.