HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
= (1 − 2) + (3 − 4) +...+ (19 − 20) + 21
= − 1 × 10 + 21
= 11
a) I ride a bike to my grandmother's house every Sunday
b) I would like some bread and milk for breakfast
c) What about having a cup of coffee now ?
d) Would you like to go there with me tonight ?
e) My house is near a market, so i often walk there and buy things