Even if a grade is not given, the student is responsible for 19. ________ (learn) the material assigned.
I got on the bus and found a seat near the back, and then I noticed a man ________ (sit) at the front.
He suddenly appeared in class one day, _____ (wear) sun glasses.
“In the beginning, there was only a very small amount of unfairness in the world, but everyone added a little ,always （think）that it was only small and not very important ,and look where we have ended up today.”
We got a little_____（sunburn），but the day had been so relaxing that we didn’t mind.
The financial damage is nothing compared to what _______ if there had been children in the classroom in time of the fire.
A. would happen B. happened
C. would have happened D. should have happened
