điền do , don't , does , doesn't vào chỗ trống trong các câu sau cho phù hợp
1 . My mother likes chocolate , but she ___ biscuits.
2 . ___ the children wear your unifrorm at your school.
3 . Lynn's father watches badminton on tv , but he ___ watch judo.
4 . Where ___ the Masons buy their fruits ?
5 . ___ the cat like to sleep on the sofa ?
6 . Dogs love bones , but they ___ love cheese .
7 . Where ___ Sam and Ben hide their pocket money ?
8 . We eat pizza , but we ___...
Đọc tiếp
điền do , don't , does , doesn't vào chỗ trống trong các câu sau cho phù hợp
1 . My mother likes chocolate , but she ___ biscuits.
2 . ___ the children wear your unifrorm at your school.
3 . Lynn's father watches badminton on tv , but he ___ watch judo.
4 . Where ___ the Masons buy their fruits ?
5 . ___ the cat like to sleep on the sofa ?
6 . Dogs love bones , but they ___ love cheese .
7 . Where ___ Sam and Ben hide their pocket money ?
8 . We eat pizza , but we ___ eat hamburgers .
9 . ___ Mrs.Miller read magazines ?
10 . ___ the boys play cricket outside ?
11 . Please ___ play with my food .
12 . She ___ the cleaning three times a week .
13 . We ___ go out very much because we have a baby .
14 . I ___ want to talk about my neighborhood any more .
15 . How much ___ it cost to phone overseas ?
Thời gian xe thứ nhất đi từ A đến chỗ gặp là:
\(8h30p-6h25p=2h5p=\dfrac{25}{12}\left(giờ\right)\)
Thời gian xe thứ hai đi từ A đến chỗ gặp là:
\(8h30p-7h40p=50p=\dfrac{5}{6}\left(giờ\right)\)
Vận tốc của xe thứ nhất là:
\(12\times\dfrac{5}{6}:\left(\dfrac{25}{12}-\dfrac{5}{6}\right)=10:\dfrac{15}{12}=10\times\dfrac{4}{5}=8\left(\dfrac{km}{h}\right)\)
Vận tốc của xe thứ hai là 8+12=20(km/h)