way7________toexpressthemselvesThusthewritte
wordsi
ve
tedAfterthat8________ma
i
ve
tedpaperstowritetheirwordso
Thei
ve
tio
9________ofthepaperhasgreatcha
gedme
slife10________答案与简析1put→putti
g。介词后用动名词作宾语。2where→how。应是人类如何开始。3本行无错。4time前加of。alo
gperiodoftime意为