5. Из данных слов составить предложения 1. /if/at/have/don’t/I/him/shall/you/send/to/home/once/you/report/on/.
2. /before/she/Andrew/left/word/room/the/a/say/couldı.
3. //word/of/at/have/school/forgotten/but/it/learned/every/German).
4. /at/nothing/the/knew/age/of/eighteen/of/I/and/motor-cars/planes/.
5. /my/hospital/provided/before/to/with/breakfast/went/solid/I/me/a/landlady/.

1. If you don’t report on him, once you have, I shall send you to home.
Explanation: In this sentence, the word order is a bit unusual. We rearrange the words to form a coherent sentence: "Once you have reported on him, if you don't, I shall send you home."

2. Before Andrew left the room, she couldı say a word.
Explanation: The word "couldı" is not a real word, so we can assume it is a mistake. We rearrange the words to form a grammatically correct sentence: "Before she left the room, Andrew could say a word."

3. It is learned every word of German at school, but forgotten.
Explanation: This sentence is missing some necessary punctuation and has some incorrect word order. We rearrange the words to form a coherent sentence: "At school, every word of German is learned, but it is forgotten."

4. I knew nothing of motor-cars and planes at the age of eighteen.
Explanation: The given sentence is already correct and doesn't need any changes.

5. Before I went to the hospital, my landlady provided me with a solid breakfast.
Explanation: The given sentence is already correct and doesn't need any changes.