By the time Dave reached the small boat, a thick white fog _______ over the surface of the water.
| A．spread | B．has spread |
| C．had spread | D．was spreading |
It was lucky that little Jack was not at home when the fire broke out; otherwise, he____his life.
| A．had lost | B．would lose | C．would have lost | D．might lose |
Though having lived abroad for years, many Chinese still_______the traditional customs.
| A．participate | B．attract | C．observe | D．risk |
I’m afraid by the time you arrive this afternoon I_______ a lesson then.
| A．had | B．are having | C．have had | D．will be having |
In the good care of the nurses, the patient is ____recovering from the heart operation
| A．quietly | B．actually | C．gradually | D．practically |
A modern teaching building has been set up in ______ was a wasteland ten years ago.
| A．what | B．which | C．that | D．where |