_________ it takes many years to gain the skills of an expert.
| A．It is well known to us that | B．As is known to us that |
| C．As we know that | D．That is well known to us |
We had planned to finish the work before dark, but the heavy rain _____ us _____．
| A．build, up | B．put, up | C．bake, up | D．hold, up |
He always dreams of ______ a chance for him to go abroad for further study．
| A．there being | B．there to be | C．there is | D．being |
To keep healthy, most retired old people _____ jogging as a regular form of exercise．
| A．take up | B．make up | C．carry out | D．hold out |
She will stop showing off if no notice _____ of her．
| A．is taken | B．takes | C．will be taken | D．has taken |
It was in such a good place _____ everyone wanted to go and visit _____ I came across the old lady．
| A．that, that | B．where, as | C．as, that | D．as, as |