He was very rude to the Customs officer, _____ of course made things even worse.
| A．who | B．whom | C．that | D．which |
Who _____ to school earliest in your class every morning?
| A．comes | B．come | C．will come | D．is coming |
I’m sure I _____ her four years ago.
| A．have seen | B．saw | C．had seen | D．will see |
An unexpected heavy rain caused severe flooding, and the water _____ all the time.
| A．rose | B．raised | C．was rising | D．was raising |
_____ a noise just then?
| A．Have you heard | B．Were you hearing |
| C．Are you hearing | D．Did you hear |
Great changes _____ in the last twenty years in China.
| A．took place | B．have taken place |
| C．were taking place | D．have been taken place |