According to the rules, it’s necessary for students to hand in their assignments on time

45. According to the rules, it’s necessary for students to hand in their assignments on time.

→ Students ___________________________________________________ .

46. It isn’t necessary for Cathy to buy new textbooks because she can borrow them from the library.

→ Cathy_____________________________________________________ .

C. Use the given words or phrases to make complete sentences.

47. I / have / be / school / 8:50 / because / first lesson / start / 9:00

→ __________________________________________________________  

48. Although / Ann / not like / sports / she / have / play / basketball / P.E. lessons.

→ __________________________________________________________

49. I / pass / all / exams / so / parents / be / so / delighted.

→ __________________________________________________________

50. Tom / play / computer games / right now / although / he / have / important test / tomorrow morning.

→ __________________________________________________________