–Can you spare me some time? –I'm afraid not. I have lots of letters _____.
_______the Internet is bridging the distance between people, it may also be breaking some home or will cause other family problems.
_______ in my life impressed me so deeply as my first visit to the Palace Museum.
Helping others is a habit, _______ you can learn even at an early age.
_______, the weather turned out to be very hot that day.
There are two small rooms in the house, ______ serves as a kitchen