FIND OUT THE MISTAKE IN THE FOLLOWING SENTENCE

câu 31: - BAI KIEM TRA TIENG NANG CAO LOP 10 SO 1
Lớp 10 BAI KIEM TRA TIENG NANG CAO LOP 10 SO 1

Câu 31:

Find out the mistake in the following sentence : the disabled is very difficult to solve their problem

A. is

B. disabled

C. difficult

D. to solve