After the heavy snow, many students helped to clear away the snow ______ in our school.

 Just as a book is often judged ______ by the quality and appearance of its cover, a person is judged immediately by his appearance.

. Tommy’s parents thought he was at school, but _______ he was in an Internet bar. 

— Are you going to travel during this summer vacation?— No, I’ll have to do some part-time job for my study. __________, there’s a disease spreading.

He arrived here at noon, ﹍﹍in the day, and he went out and came back﹍﹍in the day.