几个高中英语的单选1.What worried him most was _____to visit his sick

几个高中英语的单选
1.What worried him most was _____to visit his sick child.
A.his being not allowed B.his not being allowed
C.his not allowing D.having not been allowed
2.Little Bob is often educated by his praents to be good and friendly to anybody even if ___.
A.attacking B.is attacked C.to be attacked D.attacked
3.____around the lab ,the visitors were taken to the playground.
A.Having shown B.Having been shown
C.Being shown D.To be shown
4.The small restaurant ,______fast food,is very popular among the students nearby.
A.to serve B.serves C.serving D.served
5.The students are forbidden .unless they have special passes,___after 11 pm.
A.from staying out B.to stay out
C.staying out D.stay out
6.____what would happen,none of them could find a way out.
A.Left wondering B.Having left wondering
C.Leaving to wonder D.Having left to wonder