—Was it 11 o’clock you begin doing your homework last night?
—Yes, things are always eating up my precious time.
| A．that | B．while | C．until | D．when |
There are two small rooms in the house, ______ serves as a kitchen
| A．the smaller of which | B．the smallest of which |
| C．the smaller of them | D．the smaller one |
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 |