__________the burglar from the second floor when the house owner found him stealing last night．
| A．Down jumping | B．Down jumped |
| C．Jumping down | D．Jumped down |
Only when he returned ___________ that the war had ended and the army had come back.
| A．we tell | B．we told | C．did we tell | D．were we told |
Nowadays more young people have suffered from diabetes __________ it is generally realized.
| A．than | B．that | C．which | D．what |
The man didn’t know _________ the thief broke into the house and stole all his valuable things
| A．it was when that | B．when it was that | C．that it was when | D．was it when that |
There ________ no water for 2 days, the travellers were all thirsty.
| A．having been | B．had been | C．is | D．was |
Her father told her to be careful when _____ the street. 
| A．he is crossing | B．she is crossing | C．crossed | D．crossing |