Some colours can _(affect) our feelings.
答案： affect
解析： can 情态动词后跟动词原形
It's really difficult to make a final _(decide) now.I want to give it up.
答案： decision
解析： make a final decision 做最终的决定
Another two children _(success) swam across the big lake last week.
答案： successfully
解析： 用副词去修饰动词
When she talked about her wedding,her eyes shone with _(happy).
答案： happiness
解析： with + 名词