The twins are so much alike that their own mother can hardly ______ them ______ .
If I ______ten years younger, I _____ very happy.
I must go there earlier. John has suggested that I _____an hour before the discussion begins.
The professor gave orders that the test ____before 5:30.
____, I got better and returned to work.
The gasoline . Let’s fill the car up at the next gas station.