Will you stay for meal as more friends will come for a gathering? — Sorry, _______. My brother is coming to see me.

______he came back ______the truth.

下列交际用语，正确、得体的一项是（ ）

____to caring for an Ebola(埃博拉) patient, the nurse found herself also infected, feeling hopeless.

The traffic on the main streets has a longer greensignal than _______ on the small ones.