1.A frog has two eyes,one mouth and four legs.Do you know?
Two frogs have( four eyes ),( two mouths )and( eight legs ).
Three frogs have( six eyes ),( three mouths )and( twelve legs ).
2.哪种说法对?请用"Yes"和"No"表示.
( yes )The earth moves round the sun.
( no )The sun moves round the moon.
3.My grandmother is very old.She is 84.She is four times as old as I am.How old am I'M( 21 )