231. The old man is used to sleepingwithout a ________in order to keep his back from bending.

1— Could you be so kind asto close the window—______________.

Do you think I should get a good guidebook? — Yes, of course_____, you also need a good camera and comfortable shoes[ ]

I’m worrying about my coming examination——Well, you will succeed in the end _______ you work with a strong will

It was really very kind of you to give me a life home——-Oh, don’t mention itI_____ past your house anyway