You should go to see him when he is so seriously ill.________, he is your brother.
With more forests being destroyed, huge quantities of good earth ______ each year.
_______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.