Sử dụng những từ này để đặt câu với could: I/ ride/ bike/ when/ I/ be/ five

Sử dụng những từ này để đặt câu với could `
1 I/ ride/ bike/ when/ I/ be/ five
2 He /sing/ English song/ when/ he / four
3 They/ not/ run /as fast as/ me
4 Yesterday, he/not go / school / because/he/be/sick
5 My father/buy / car/when/ he/be/twenty

2. Gạch chân và sửa lỗi sai trong câu sau
1 Robots cannot clean the floor
2 My sister will be able receive a schoolarship
3 He could cooked many delicious dishes
4 Because he has a toothache, he can eat anything
5 she can speak English well, but she cannot writes it