—It is _______he often fails in exams_______ makes his parents worried about him.—So, he has to work whole-heartedly.
__________ caused the accident is still a complete mystery.
__________that they found an unusual plant in the forest.
__________we can’t get seems better than__________we have.
—Do you still remember__________he was taken to the hospital? —Yes,he was sent to the hospital in Mr Smith’s car.
__________beat Xiao Wang black and blue is not known.