______ on the top of the tower, and you can see the whole city.
.---Will the Smiths go abroad this summer? ---No, they finally decided _______ .
. ---I usually go there by train. ---Why not _______ by boat for a change.
.He pretended _______ nothing about it.
. Little Jim should love _______ to the theatre this evening.
. They would not allow him _______ across the enemy line.