____to caring for an Ebola(埃博拉) patient, the nurse found herself also infected, feeling hopeless.
| A．Devoting | B．Devoted |
| C．Having devoted | D．To devote |
—What’s that noise，John?
—Sorry，Linda.I forgot to tell you.The school library________.
| A．is rebuilt | B．is being rebuilt |
| C．was rebuilt | D．has been rebuilt |
Every year a flood of farmers arrive in Shenzhen for the moneymaking jobs they ________ before leaving their hometowns.
| A．promised | B．were promised |
| C．have promised | D．have been promised |
By the time Pierce comes back from the meeting，we________here for three hours.
| A．will be waiting | B．is waiting |
| C．will wait | D．will have waited |
I was out of town at the time，so I don’t know exactly how it ________.
| A．was happening | B．happened |
| C．happens | D．has happened |
—Tom，you’ve got an A in the final English exam.Congratulations!
—Thanks.But I never thought the result came out so fast.The papers________when I left the teacher’s office just now.
| A．had been marked |
| B．were still being marked |
| C．are still marking |
| D．had been marking |