Hai tỉnh A và B cách nhau 90km. Lúc 6h30' sáng, một xe tải đi từ tỉnh A đến tỉnhB. Đến 7h15' sáng cùng ngày, một xe con cũng đi từ tỉnh A đến tỉnh B đuổi theo xe tải với vận tốc lớn hơn vận tốc xe tải 20km/h. Hai xe gặp nhau tại tỉnh B. Tính vận tốc mỗi xe
We can't go for a walk because the weather is bad
They sleep soundly although the night air was hot
The match continued although it rained heavily
I can't sleep because the weather is hot
Despite our careful plans, a lot of thing went wrong
Nancy told me the secret, despite having promised not to do so
In spite of her dislike of coffee, she drank it to keep herself warm
I can't study because it is noisy
The train came late because it was foggy
I couldn't read the letter because it was dark
The train was late because the fog was thick.
He gets bad marks because he is lazy( chuyển sang ba