The dictionary, a few pages ________ aremissing, is of no use.

He has been acting strangely these days. I can’t _____ his actions at all.

The human body can ________ itself to changes of temperature slowly.

The flowers ______ my mother, but my sister thought they were for her and took them

(2009湖南娄底重点高中联考) students are required to take part in the boat race．