Rewrite the sentences and correct the mistakes. Each sentence has two mistakes. 

Example I believe, aliens might helping us solve problems on Earth. 

                      → I believe aliens might help us solve problems on Earth. 

1. I think, business people will finds ways to make space tourism less expensive. 

→ _________________________________________________________________

1. I not believe astronomers will discover new planets where humans can lives. 

→ _________________________________________________________________

1. His first lecture was bored but I believe Professor Lee's classes will improve. 

→ _________________________________________________________________

1. I don't thinking it will be easy to, travel to other star systems in the future. 

→ _________________________________________________________________

1. In my opinion a university in Boston will is a good place to study. 

→ _________________________________________________________________

`1)` I think business people will find ways to make space tourism less expensive.

`->` S + will + V-inf ... `=>` finds bỏ "s"

`->` đằng sau think bỏ "," (không phù hợp)

`2)` I do not believe astronomers will discover new planets where humans can live.

`->` not believe bị thiếu "do" sau "I" `=>` thêm do

`->` can V-inf: có thể làm gì `=>` lives bỏ "s"

`3)` His first lecture was boring, but I believe Professor Lee's classes will improve.

`->` S + was/were + adj/adv... `=>` bored thành boring

`->` sau but có ","

`4)` I don't think it will be easy to travel to other star systems in the future.

`->` be easy to V: dễ dàng làm gì `=>` bỏ "," sau to

`->` S + do/does (not) + V-inf ... `=>` thinking thành think

`5)` In my opinion, a university in Boston will be a good place to study.

`->` in one's opinion: theo ý kiến của ai `=>` có "," sau opinion

`->` will is không có nghĩa `=>` will be: sẽ là

@nene

`1,` I think business people will find ways to make space tourism less expensive.

- finds -> find

- I think + S + will + V-inf + O : tôi nghĩ -> đưa ra ý kiến.

`2,` I don't believe astronomers will discover new planets where humans can live.

- not -> don't , lives -> live

- Thì Hiện Tại Đơn : S + don't/doesn't + V-inf + O

- S + can + V-inf + O : Ai đó có thể làm việc gì

`3,` His first lecture was boring , but I believe Professor Lee's classes will improve.

- bored -> boring ; trước but phải có dấu phẩy. 

- Tính từ đuôi ing miêu tả tính chất , đặc điểm của sự vật -> mang tính chủ động.

- S + V + O , but + S + V + O : nhưng -> sự đối lập giữa 2 sự việc

`4,` I don't think it will be easy to travel to other star systems in the future.

- thinking -> think , bỏ dấu phẩy sau "to"

- Thì Hiện Tại Đơn : S + don't/doesn't + V-inf + O

- It + be + adj + (for sb) + to V : như thế nào (với ai) để làm gì

`5,` In my opinion , a university in Boston wil be a good place to study.

- sau cụm "in my opinion" cần có dấu phẩy , is -> be

- Thì Tương Lai Đơn : S + will + V-inf + O

- "In my opinion" là một cụm riêng nên phải dùng dấu phẩy để ngăn cách.