① If no one____phone at home ,ring me at work
A returns B replies Canswers D receives
② I didn't see your sister at the meeting if she _____she would have met my brother
A has come B did come C come D had come
③ The sun rises in the east and sets in the west ,so it seems as if the sun _____round the earth
A circles B is circling C be circling D were circling
④ Jill would rather we ____now ,but we must go to work
A not leave B had not left C didn't leave D not to be left
⑤ ---Why didn't you help him ?
---I would have _____I didn't have the money
A if B and C but D otherwise
⑥ If only I ____how to operate a computer as you do
A had known B wuold know C should know D knew