—Tom, have you finished your homework?
—Yes, I ________ before you came back, mom.
| A．finished | B．have finished | C．had finished | D．finish |
The Indian Ocean tsunami at the end of 2004 is believed _____ more than 160,000 people and made millions homeless, _______ it perhaps the most destroying tsunami in history.
| A．to kill; making | B．to have killed; making |
| C．having killed; to make | D．killing; made |
The manager decided to give the job to ____ he believed had a strong sense of duty.
| A．whoever | B．whomever | C．who | D．those |
The factory produced many famous cars, none of ____ shipped to foreign countries.
| A．them | B．which | C．it | D．what |
.Nowadays ________ Internet is becoming increasingly popular and new high speed broadband network was recently started.
| A．a; the | B．the; a | C．a; a | D．the; the |
Lei Feng is always ready to help others when they are in trouble and he never _______ their request.
| A．turns up | B．turns over | C．turns in | D．turns down |