It suddenly occurred to him___ he had left his keys in the office.
–What do you think of your Junior Middle School life?--I think it is colorful, ______ I am always busy.
Now, people have more free time. Square Dancing is becoming more and more ______.
Going to the movies is good, ______ I really only like listening to music.
Dreams are beautiful. However, to ______ them needs lots of time and work.
–Cathy, can you answer the door? I ______ the room. –I’m coming, mum.