What great trouble we had _________ where his house was.
| A．in finding | B．to find |
| C．find | D．found |
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 |
Scientists have to work hard to keep _____ with modern discoveries and developments.
| A．company | B．track | C．touch | D．pace |
She _____ the temptation to buy a coat she could not afford.
| A．challenged | B．obstructed | C．contradicted | D．resisted |
. 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 |
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 |