Ⅰ.单句语法填空
1．I will give him a present as an expression (express) of gratitude.
2．The policeman commanded that the thief (should)_hand (hand) in what he had stolen.
3．The mother looks at the door frequently (frequent), expecting the children’s coming.
4．You’ll be able to choose a room based (base) on your own personal tastes.
