co hai cai , mot cai 5 lit va mot cai 7 lit . voi hai cai binh do, lam the nao de dong duoc 4 lit nuoc o voi nuoc may
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đề thi vào trường chuyên nhe các bạn ai mà làm được mình sẽ k
dễ mà 1/2=1-1/2; 5/6=1-1/6; ... 89/90=1-1/90
Mà 1/2=1/1.2; 1/6=1/2.3; ... 1/90=1/9.10
Tương tự như thế sẽ tìm ra kq mik chỉ gợi ý thoy nhá !!!
1.1.goes
2. Are you writting
3.haven't cleaned
2.1 Where are they planting the tree ?
2. When will she visit hanoi ?
3. When does she often watch TV ?
4.How often do you go to school ?
5. How are all the buildings in London ?
6. What is the weather in sweden in winter ?
7.Where was your father last month ?
8. Why did she go to the doctor ?
9. What time did Nam leave home yesterday ?
10. Where will be your future house ?
11. How often does she go to the fitness center ?
12. When did they join the environment project ?
13. What subject does your class have on monday ?
14. Where will you travel by a super carr ?