6. a. write the plural for each noun. 1. gas 2. bath 3. waltz 4. penny 5. roof 6. grapefruit 7. schoolchild 8. deer 9. sheep 10. woman. b. write the singular for each noun. 1. wives 2. men 3. teeth 4. mice 5. days 6. watches 7. armies 8 fish 9. swine 10. oxen

A. write the plural for each noun. 1. gasses 2. baths 3. waltzes 4. pence 5. roofs 6. grapefruit 7. schoolchildren 8. deer 9. sheep 10. women. b. write he singular for each noun. 1. wife 2. man 3. tooth 4. mouse 5. day 6. watch 7. army 8 fish 9. swine 10. ox

ответ: 1. Began 2. Translated, brought 3. Returned, noticed 4. Doesn’t rain, will go 5. Don’t ring up, won’t go 6. Invite, will go 7. Learn 8. Have, will help 9. Will go/is going to go/is going 10. Passed, fell 11. Came, was, were 12. Asked, looked, said 13. Has been working, was 14. Is, won’t go 15. Don’t use 16. Did...come, came 17. Saw, invited 18. Will come 19. Will phone, arrives 20. Like 21. Do you usually read 22. Meet, won’t recognize 23. Comes 24. Need, will tell 25. Is, will go

Насчёт условных предложений не уверена, так как они могут быть разных типов из-за разных времён, которые не указаны. Да и некоторые предложения могут быть как , так и в настоящем или будущем времени. Слов-указателей нет.

Объяснение:

1. the secretary asked her boss what time (he was leaving) for the airport. 2. he wondered what (he should do) to set the situation right. 3. melvin promised (to pay) back the money as soon as possible. 4. mr.ferrow suggested (talking) to the ceo in person. 5. the company's executive director informed the staffers that they (would be given) a few days off. 6. the marketing director inquired when the launch campaign of the new product (was going) to take place. 7. mr.martin denied that she (had taken) any money from the company. 8. the teacher explained that the elements of the marketing must (focus) on the consumer. 9. we found out that the new trainee (had been promoted) over the heads of several of his seniors. 10. the shop assistant told us(not to touch)any of the items on display.