According _____ a recent survey, children spent upto 25 hours a week _____ TV.
| A．to；to watch | B．to；watching | C．as；to watch | D．as；watching |
Thepupilshere_____allkindsofexerciseseverydayinthepastfewweeks.
| A．keptbusydoing | B．keepondoing |
| C．havekeptbusydoing | D．havebeenkeptbusydoing |
He______andwasmadetorepeatit.
| A．didn'tunderstand | B．didn'tbeunderstood |
| C．wasn'tunderstand | D．wasn'tunderstood |
Thethief______whenhewasstealingawalletfromawoman.
| A．happenedtonotice | B．wastakenplacetonotice |
| C．washappenedtobenoticed | D．happenedtobenoticed |
He_____inashowerlastnightandgotwetthrough.
| A．caught | B．wascaught | C．hadcaught | D．caughtup |
Theteachertoldthestudentsthatthey______tobeusefulmentothecountry.
| A．wereallexpected | B．wereallexpecting |
| C．allwereexpected | D．allexpected |