—Your bike was broken. Were you late for class this morning, Linda?
—No. Luckily, Mr. Green passed by and .
A:waited for me
B:let me down
C:kicked me off
D:gave me a lift
南方地区房顶坡度大的主要原因是( )
中国在20世纪五六十年代,涌现出许多英雄模范人物,其中有全心全意为人民服务的解放军好战士是( )
已知代数式x+2y的值是3,则代数式2x+4y+1的值是( )