Welcome to the Science Museum, everyone! This stone axe _______ in South Africa and
experts can’t be exactly sure about its use.
| A．had been found | B．was found | C．has been found | D．would be found |
Her sister left home in1998, and since.
| A．had not been heard of | B．has not been heard of |
| C．had not heard of | D．has been heard of |
What transport do you prefer .
| A．to use | B．use | C．using | D．uses |
______， a sleepy driver killed twenty－two students and teachers in a traffic accident in Shanxi Province.
| A．What's more | B．After all |
| C．Believe it or not | D．More or less |
This is the first time that I it.
| A．see | B．saw | C．had seen | D．have seen |
Tell your friends that you are concernedhim.
| A．about | B．with | C．to | D．in |