用介词at、in、on、under和with填空.They are walking ( ) the bridge.There are some boats ( ) the river.A man and his wife are looking ( ) them.Joan is looling at abig ship.The ship is going ( )the bridge.

问题描述:

用介词at、in、on、under和with填空.
They are walking ( ) the bridge.There are some boats ( ) the river.A man and his wife are looking ( ) them.Joan is looling at abig ship.The ship is going ( )the bridge.

on in at under

in,on,at,under