I tried to come closer to watch the bird, but as soon as it noticed me, ____ into the woods.
These are all ________houses for the homeless.
— Were you worried about him last night? — Yes. It was ________.
Now that he has missed his ________, he’ll have to wait for the next round.
We’ve always known him ________ a warm but calm character.
The step you have taken is ________ much risk(冒险).