用方框内短语的适当形式填空

【小题1】Please sit______; dinner is ready.
【小题2】It is often hard to work and study ______.
【小题3】What he said is right, so you should ______.
【小题4】No matter what you are doing, you should ______ it.
【小题5】If you ______ something, you will be glad to study it.
【小题6】You’ll need to think it over before you ______.
【小题7】He ______ himself for winning first prize in the competition last week.
【小题8】When the clock stopped he took it apart to ______ what was wrong.
【小题9】He ______ to make himself heard in the crowd.
【小题10】He is very angry now, so it is difficult for him to ______ at once.