()15.They have saved a lot of time and money since the new robots to their factory.

A.are brought
B.were brought
C.brought
D.bring

15. B

Ⅲ. 按要求完成句子,一空一词
16. Jim sent a letter to John last month. (改为被动语态)
A letter John by Jim last month.
17. Mr Lee saw some boys play soccer on the playground this morning. (改为被动语态)
Some boys soccer on the playground by Mr Lee this morning.
18. The maths problem was solved last night. (改为否定句)
The maths problem last night.
19. A house with a garden was bought last year by Uncle Wang. (改为一般疑问句并作肯定回答)
— a house with a garden by Uncle Wang last year?
—Yes, it .
20. These photos were taken two years ago. (对画线部分提问)
these photos ?

16. was sent to 17. were seen to play 18. wasn't solved 19. Was; bought; was 20. When
were; taken

Ⅳ. 用括号内所给单词的适当形式完成短文
[情境题]Growing up feels like stepping into a bigger pair of shoes—exciting but sometimes terrible! I remember when my first bike 21. (buy) for me by my parents. At first, I 22. (throw) off easily, but Dad patiently held the seat. After many tries, I finally rode alone! That small success 23. (celebrate) with big smiles.
School brought new challenges. Last year, I 24. (choose) as class monitor (班长). Suddenly, important tasks 25. (give) to me, like collecting homework. I felt nervous, but learning to be responsible taught me a lot. Sometimes, mistakes 26. (make), sure, like forgetting the notebooks at home, but I learnt to write reminders.
Friendships changed, too. Simple games 27. (replace) by deeper talks. Sometimes my feelings 28. (hurt), but apologies (道歉) were given all the time, and we learnt to understand each other better.
Through these experiences, I realised growth isn't always easy. New skills 29. (learn), responsibilities are taken, and exciting challenges 30. (face). Every stumble (挫折), success, and lesson shapes who I become. The journey continues, step by step!

21. was bought 22. was thrown 23. was celebrated 24. was chosen 25. were given
26. were made 27. were replaced 28. were hurt 29. are learnt 30. are faced