don't give up ____.Lthink it's still___.(help)

don't give up ____.Lthink it's still___.(help)
don't give up ____.Lthink it's still___.(help)

don't give up ____.Lthink it's still___.(help)
help helpful

helping give up 是一个动名词短语 应该接动词的ing形式
helpful