He's never lent money to others(改为一般疑问句）
Has he never lent money to others?他从不把钱借给别人吗?l can't wait any longer （保持原句意思）l can no longer wait
.Few young people are interested in doing this type of work,are they?(改为反义疑问句)
Nobody knows how begin our work(改为简单句)
My brother is so young that he can't join the army
My brother isn't old enough to join the army
My brother is too young to join the army