You’ve dropped __________ “s” in the word “across”.－Oh, you are right, __________ letter “s” should be doubled like this “cross”.

The students come to see their teacher________ September 10th. [ ]

Do you know when we can go back home? —Sorry, I don’t. Because of the heavy snow storm, highways have been blocked and flights have been __________.

Whydo so many people love Prime Minister (总理) Wen Jiabao?—Because he likes working _______ the working people. [ ]

People _______ pale skin and blonde hair look good _______ yellow and pink.