415. This is because we feel pain． 这是因为我们能感到疼痛。

414. The sun comes up in the east． 太阳从东方升起。

413. Plenty of sleep is healthful． 充足的睡眠有益于健康。

412. Please let me check the bill． 请让我核对一下帐单。

411. Let"s go for a walk，shall we? 咱们出去走走，好吗?

410. I"ve got too much work to do． 我要做的工作太多了。

409. I want to see the film again． 我真想再看一遍。

408. I smelled a smell of cooking． 我闻到了烧菜做饭的味道。

407. I have something to tell you． 我有事要告诉你。

406. His father runs a restaurant． 他的父亲经营一家餐馆。