Up till now we _______ four units and this will be the second time that we _______ a test.
Don’t blame him any more. _______, he is only a child.
--The window is dirty. ----I know. It ______ for weeks.
The villagers went out to the mountain __________ the missing child.
There is no doubt _______ he will win.
Having been in hospital for two months,he was going to catch up with his classmates.