Tom and David are both my good friendsDavid seems very serious, _____ Tom has a good sense of humor.[ ]

We tried our best to make our garden________its surroundings.[ ]

appy childhoodmay have some negative effects on a person’s characters however, they are notalways_________,

I am shocked at the news that many pupils were killed in the terrible traffic accident. —So am I. Little the safety of the poor children.

下列各句中加点的熟语使用不当的一项是（ ）