We should tell hunters _______tigers.
Everybody should remember it is not _________ to swim in the river alone.
Some students are so ______ that they often make mistakes in their homework.
It’s about 5 away from here to the mountain.
—Which do you like , summer or winter? —I prefer summer.
— Where is Lin Tao? — He _____ to the teachers’ office. He will be back soon.