Personal space is the region surrounding a person _____they regard as psychologically theirs.
| A．who | B．where | C．when | D．which |
The result is not the same ______ they had expected, ______ was rather disappointing.
| A．which; as | B．as; that |
| C．that; which | D．as; which |
Although he was in poor health, Robert succeeded other more famous engineers failed．
| A．which | B．that | C．what | D．where |
You can eat food free in my restaurantyou like.
| A．whenever | B．wherever |
| C．whatever | D．however |
—when has the country been open to international trade? —1978，I suppose.
| A．Since | B．In | C．From | D．After |
With the rapid growth of population, the city ____ in all directions in the past five years.
| A．spreads | B．has spread |
| C．spread | D．had spread |