1 ____is known to us all, things can easily go wrong when people are under______.
A. Which;control      B. As; load         C. It; strength        D. As; stress
2.  ____ the storm on the sea, it is reported that the president has put off the trip.
   A. thanks to           B. because of       C.due to             D. as a result
3.----- This is the second time I____ pictures with my own camera.
 ----- It’s time that you ____ a picture of me.
   A. had taken; took     B. have taken; took  C. will take; will take D. took; have taken