1．(2019·山西师大附中期中)—The building was on fire for two hours last night.
—Someone must have set fire to it.
2．The soldiers were sent to that area immediately to save the people trapped in the ruins (ruin)．
3．Chinese is one of the easiest languages that I have learnt (learn)．
4．He spent very little time learning English, perhaps no more than one year in all.
5．This kind of poor packing can easily cause damage to the goods.
6．As long as there is the possibility (possible) of saving our planet, take action now before it is too late.
7．I got to the station late, but luckily (luck) the train was still there.
8．—Do you know how the building caught fire?
—No.But the fire had been put (put) out already before we arrived.
9．I gave him a warning (warn) not to go there, but he didn't follow it.
10．The children were terrified (terrify) by the scream coming from the basement.
