填空题
Questions 17-20
Complete the table below.
Write NO MORE THAN TWO WORDS for each answer.
| Website | Content | Activity | Age group |
| www.mathtutor.com | mathematics | practise (17) | all levdls |
| www.spellcity.com | spelling | (18) | primary school |
| www.beeb.co/typing | typing | (19) | all levels |
| www.coolresource.com | (20) | extra practice | middle school |