She left in_______ a hurry _______she forgot to lock the door.

—     is your grandmother?—She is 80years old.

Our math teacher is very kind ______ he looks very serious.

–All the students in your class are in the photo ____ Susan. Why? --Aha, that is because she helped us take this photo.

—— Hurry up. The bus is coming! —— Oh, no, we mustn’t cross the street ______ the traffic lights are green.