There_______ a teacher and some students on the playground.
Can you ___what our life would be like without water or food ?
How does Jack usually go to school?He _____ride a bike, but now he _____ walking there.
You should ______ the bus when it stops.
— The radio says it will be rainy tomorrow.— . I planned to go hiking with my friends.
— I can’t believe the old man can come here from his home on foot.— It’s really not easy such an old man so far.