She was so angry and spoke so fast that none of us understood ______ he said meant．
| A．that | B．what | C．that that | D．what what |
Having been attacked by terrorists, _____.
| A．doctors cane to their rescue | B．the tall building collapsed |
| C．an emergency measure was taken | D．warnings were given to tourists |
The disc, digitally _____ in the studio, sounded fantastic at the party.
| A．recorded | B．recording |
| C．to be recorded | D．having recorded |
According to a recent U.S. survey, children spent up to 25 hours a week _____ TV.
| A．to watch | B．to watching | C．watching | D．watch |
There is a new problem involved in the popularity of private cars _____ road conditions need _____.
| A．that, to be improved | B．which, to be improved |
| C．where, improving | D．when, improving |
An army spokesman stressed that all the soldiers had been ordered _____ clear warning before firing any shots.
| A．to issue | B．being issued | C．to have issued | D．to be issued |