根据汉语提示完成句子
They __________________________________________________ (相爱）each other for two years.
______________________________ (不要紧）whether he'llcome or not.
I ______________________________ (相信）you'll succeedsooner or later.
She always ____________________ ________________________________________ (让妈妈给她洗衣服）.
To finish the work on time, we'll need______________________________  (另外5名学生）.