Mr Brown had lain ____ the ground ____ four hours before they finally found him. [ ]

Do you think I should get a good guidebook?– Yes, of course. __________ , you also need a good camera and comfortable shoes.

It seems that it is going to rain. You’d better the windows open when you leave the house. [ ]

What else do you want? –_______________else. I think I have got everything now.

.As reported in the essay by Prof. Brown, it is only in the most difficult circumstances ________ a man’s abilities are fully tested.