He had his camera ready________he saw something that he would make a good picture.A even if B if only C in case D so that
_______ details of this job, please contact our manager Mr. Smith at 8765323.
— I phoned you at 7 yesterday evening but nobody answered.— Oh, I _______my dog in the park then.
Will was lying on the grass, _______the sky thick with stars.
The teacher, along with 5 of her students, ________talking with a foreign teacher in the English Corner at that time.
Gaining the knowledge ________ environmental protection will help you to become a qualified environmentalist.