This .............., we went out to play in the sports ground. 

A. was done                B. did              C. was being done      D. done 

The stories of my grandmother most ______ have never been heard should have been made into a book

A.of which    B.in that    C.of whom   B. for whose

tim ra loi sai trong cau

I wish I didn't say that to him yesterday

We... the work so fast without your help

A. don't have got through the customs B. hadn't had got through the customs

C. couldn't have got through the customs C. can't have got through

......, humans could not live at all

A.If it was for the sun B. Were it not for the sun

C.If it not shouldn't be for the sun D.Had it not been for the sun

jim and tim.......last night but they went to the party instead

A. must have studied B. might study C.would study D. should have studied

tim loi sai roi sua

1, it was the children that was frightened by her

2, the flight on it I wanted to travel was cancelled because of the bad weather

Hai lá sắt có khối lượng bằng nhau và bằng 11,2 g. Một lá cho tác dụng hết với khí clo, một lá ngâm trong dung dịch HCl dư. tính khối lượng muối tạo ra trong 2 th

sửa lỗi sai

Today in Vietnam, like many other developed countries, girls can go to school. This shows that gender inequality in education has been broken down. Girls can go to school and sometimes even better than boys. But in some poor and backward countries in Africa such as Niger, Mali, Ethiopia, ... girls are not allowed to go to school. Niger is still an underdeveloped country due to unfavorable geographical conditions as well as poor infrastructure. The majority of the country's population lives in rural areas and has little access to education. In Ethiopia, child marriage is a major influence on women's chances of attending school

Từ một đỉnh tháp cao 12m so với mặt đất, người ta ném một hòn đá với vận tốc ban đầu v0 = 15m/s, theo phương hợp với phương nằm ngang một góc α = 45. lấy g=9,8 m/s, bỏ qua sức cản của kk hãy tính

a) thời gian hòn đá bay trong kk

b)độ cao hòn đá đạt được so với mặt đất

c) khoảng cách theo phương ngang từ điểm hòn đá chạm đất đến chân tháp

d) phương chiều, độ lớn vận tốc khi hòn đá chạm đất