4. Which of the underline parts in each questions is incorrect? Find and correct it.

(Phần nào gạch chân trong mỗi câu hỏi là không chính xác? Tìm và sửa nó)

1. The teacher asked the pupils what they are doing then.

                                        A                 B               C 

2. My father wondered me what I was going to do the following weekend.

                              A                              B                                      C

3. My brother wanted to know who the scientists were exploring other planets.

                               A                        B                                              C

4. l asked my teacher what food spacemen eat when they were travelling in a spacecraft.

                                               A                              B                                                     C

5. Scientists are still wondering how many planets are there in our galaxy.

                                 A                             B                                C