When you hear a fire alarm, don't rush________, you should keep calm.
16.—Tom, you’ve got an A in the final English exam. Congratulations! —Thanks. But I never thought the result came out so fast. The papers _____ when I left the teacher’s office just now.
15.I didn’t see your sister at the meeting. If she _______, she would have met my brother.
14.The teacher, with 6 girls and 8 boys in her class, _____ visiting a museum when the earthquake struck.
13.Because they hadn’t booked a room in advance, there were _____ left when they arrived at the hotel.
12.—Hello, Jack, where were you last night? —_____. We were talking about the war on Iraq.