Not until I began to work ____ how much time I had wasted.
| A．didn't I realize | B．did I realize | C．I didn't realize | D．I realized |
---When shall we restart our business?
--- Not until weour plan. 
| A．will finish | B．are finishing | C．are to finish | D．have finished |
In front of our housemany beautiful flowerswhen my grandparents were still alive with us.
| A．did; grow | B．grew; / | C．had; grown | D．grow; / |
I don’t think anyone can finish the experiment, ____?
| A．do I | B．can they | C．can’t they | D．don’t I |
Now there is just one pointI wish you to make clear.
| A．where | B．that | C．when | D．what |
How can I ____ it ____ to you how important this is?
| A．get… along | B．get… over | C．get… across | D．get… through |