已知m2+m-2=0,则代数式m3+3m2+2000的值为__________.。
At times the balance in nature is ______,resulting in a number of possibly unforeseen effects.
I still remember to the Famen Temple and what I saw there.
The best means to go there _________walking.
He is determined to become a specialist ________ computer when he grows up.
The teacher, with 6 girls and 8 boys of her class, ________ visiting a museum when the earthquake struck.