Why are you in such a hurry- I studied very hard for my math exam last night, so I slept late.

, you thewindow quickly, will you— OK! Oh! The window broken

Mary failed the driving test again．If she ________ harder, she ________ the test easily．

Guess what! I came across my primary school science teacher this morning, ______ I have lost touch for almost 20 years.

It is exactly the area racial conflicts arise now and then.