Don’t let the child who is ________ go to school．
| A．so young as to | B．not old enough to | C．not old enough | D．too young to |
It was decided to _____ the search when there was no hope of finding the missing girl alive.
| A．call off | B．take up | C．keep off | D．ring up |
He put in a special _____ for an extra day's holiday so that he could attend his daughter's wedding.
| A．request | B．demand | C．inquiry | D．proposal |
Scientists have to work hard to keep _____ with modern discoveries and developments.
| A．company | B．track | C．touch | D．pace |
He didn't _____ what I read because his mind was on something else.
| A．hold on | B．catch on | C．take in | D．get over |
He thought this was the first pair of shoes that had fitted him _____.
| A．perfectly | B．justly | C．fairly | D．rightly |