After months of voyage, Columbus arrived in _____ later proved a new continent.
| A．where | B．which | C．what | D．that |
Use your head. Nothing taught by others can have the same effect on you as ______learned by yourself．
| A．those | B．what | C．that | D．the one |
All the preparations for the work_______, we’re ready to start.
| A．are completed | B．have been completed |
| C．completed | D．had been completed |
--- Good morning, Doctor Brown’s office.
--- Hello, this is Johnson. Could you please tell Doctor Brown I ? My car won’t start.
| A．have been delayed | B．am delayed |
| C．will be delayed, | D．was delayed |
It was said that the famous pop star was found ___ suicide in a hotel near the seaside.
| A．commit | B．to commit | C．to have committed | D．committing |
This is a difficult and stressful job, but one ______ you can really help people.
| A．where | B．that | C．which | D．of which |