Câu hỏi:

We would take part in the competition if the prize __________ bigger.

His father is going to repair the bike for him soon.

________________________________________________________________

We try __________ in touch with our neighbor after moving our house.

What is the most well-known __________ invention in the 19th century?

People had __________ into a temporary shelter after the mud slide.

Find and correct the mistakes

We must act now before it is too late doing anything about the problem.

Marie Curie, Polish-born French physicist, was famous __________ her work on radioactivity.