No sooner _________ to school _________ the bell for the first class began this morning.
| A．had I got; when | B．I had got; than |
| C．had I got; than | D．did I get; when |
He failed the midterm examination and only then ________how much time he had wasted.
| A．he realized | B．did he realize |
| C．he had realized | D．had he realized |
John opened the door. There _____ he had never seen before.
| A．a girl did stand | B．a girl stood |
| C．did a girl stand | D．stood a girl |
Every evening after dinner, if not from work, I will spend some time walking my dog.
| A．being tired | B．tiring | C．tired | D．to be tired |
The experiment shows that proper amounts of exercise ,if _______regularly, can improve our health.
| A．being carried out | B．carrying out | C．carried out | D．to carry out |
Not until I ________ to work ____ how much time I had wasted.
| A．did begin; didn’t I realize | B．began; I realized |
| C．did begin; I realized | D．began; did I realize |
Up went the price and _______.
| A．the living standard came down | B．came down the living standard |
| C．down came the living standard | D．down the living stand came |
So sudden ______ that the enemy had no time to escape.
| A．did the attack | B．the attack did | C．was the attack | D．the attack was |
Only when the European countries' financial system broke down _____to take measures to deal with those problems．
| A．did they decide | B．they decided | C．they had decided | D．had they decided |
_____all over the hills and around the lake are wild flowers of different kinds.
| A．To grow | B．Growing | C．Grown | D．Grow |