There is no doubt _____ short sight is a serious problem among the youth of our country.
| A．which | B．whether | C．what | D．that |
Who is the woman ____ is sweeping the floor over there?
| A．who | B．/ | C．that | D．when |
The man ____ you talked just now is a worker.
| A．who | B．whom | C．to whom | D．to who |
The man ____ you are going to make friends is my father’s neighbour.
| A．with whom | B．when | C．to whom | D．which |
The doctor ____ is leaving for Africa next month.
| A．the nurse is talking to him | B．whom the nurse is talking |
| C．the nurse is talking to | D．who the nurse is talking |
The man ____ around our school is from America.
| A．which you showed | B．you showed him | C．you showed | D．where you showed |