elon e the . 33/ About thirty million people are watching this program. →This program 34/ You are tired because you often stay up late. → If you 35/ The students are working in a laboratory with a lot of chemicals. → The laboratory 36/ The last time I saw him was two days ago. →I haven't TEST 30

33.About thirty million people are watching this program.

-> This program is being watched by about thirty million people.
34.You are tired because you often stay up late.

-> If you didn't stay up late, you would not be tired.
35.The students are working in a laboratory with a lot of chemicals.

-> The laboratory with a lot of chemicals is being worked in by the students.
36.The last time I saw him was two days ago.

-> I haven't  seen him for two days.