It's ten years since the scientist _______on his life's work of discovering the valuable chemical.
| A．made for | B．set out | C．took off | D．turned up |
As she ___ the newspaper. Granny ___ asleep.
| A．read , was falling | B．was reading; fell | C．was reading, was falling | D．read; fell |
I don't really work here; I ___ until the new secretary arrives.
| A．just help out | B．have just helped out | C．am just helping out | D．will just help out |
It ___ that Napoleon always asked the same three questions, and usually in the same order.
| A．said | B．is believed | C．was well known | D．believed |
The population of China ___ over one thousand million.
| A．is | B．are | C．has | D．have |
I hace no pen ___.
| A．to write with | B．to write | C．to write on | D．for writing |