I doubt______ he will come to attend our school’s 107th anniversary ceremony.

Allen didn’t work hard at his lessons. ______, he failed in his exams.

Why didn’t you keep your words，Billy—Sorry, dear. But I really forgot where I was ________to meet you.

Unfortunately, it was in Yushu County, ______ a 7.1-magnitude earthquake happened on April 14, 2010, ______ a large number of students were buried inside damaged schools

I was_______ about it. I thought you were responsible and that’s why I scolded you. Please forgive me.