Bill was doing a lot of physical exercise to build up his______.
| A．energy | B．strength | C．force | D．power |
____is known to us all,,things can easily go wrong when people are under______.
| A．Which;control | B．As; load | C．It; strength | D．As; stress |
We began to work in the fields. ____, it started to rain, so we went home.
| A．But | B．However | C．While | D．Yet |
First as a student, she went on___(become) a surgeon.
| A．to get | B．to be | C．to become | D．to turn |
He spoke for a long time but the meaning didn’t really _______.
| A．come out | B．came up | C．came across | D．came down |
The manager of the company told us that very little____was made of the waste material in the past.
| A．cost | B．value | C．use | D．jewel |