It was pouring . All the machines stood _____ in the open air.
A. uncover B. to be uncovered C. uncovered D uncovering
---Who is making so much noise in the garden? --- ___ the children.
| A．It is | B．They are | C．That is | D．There are |
Were all three people in the car injured in the accident? No,___ only the two passengers who got hurt.
| A．it was | B．there is | C．it were | D．there was |
---what causes your heart attack？
---It is_____
| A．because of your overweight |
| B．your being overweight |
| C．because you are overweight |
| D．you are so overweight |
--- I can’t find Mr. Smith .Where did you meet him this morning?
--- It was in the hotel ___ he stayed.
A. thatB whichC. the oneD. where
. I failed in the final examination last term and only then____ the importance of studies.
A I realized B I had realized C had I realizedD did I realize