把下列单词每次加一个字母变成新的单词。(15分)
he→( )→( )→( )
There are ________ flowers around my school.
A．much B．lot C．many
The desk is ________ front of the chair.
A．on B．in C．at
Look at the photo ________ my sister.
A．of B．and C．by
We ________ about tongue twisters last Monday.
A．learn B．learned C．leaning
Amy ________ pictures with colour pens last evening.
A．drew B．draw C．drawed