One of the students hasn’t prepared _____ lessons very well.

---I heard that Bill was scolded by the teacher last week. ---Ah, yes. The teacher wanted to check his exercises, but ___ was finished at all.

We should never ever forget about the war in Iraq and the sufferings(苦难) ______caused to the people there.

I got this bicycle for______：My friend gave it to me when she bought a new one．

 The fact that she was foreign made ______ difficult for her to get a job in that country.