I don’t know _________.
| A．what to do it | B．how to do it | C．what to do | D．to do what |
The energy is ________ makes the cells able to do their work.
| A．that | B．which | C．what | D．such |
It is well known _________ a person eats causes changes in the body.
| A．that what | B．that | C．what | D．how |
________leaves the room last ought to turn off the lights.
| A．Anyone | B．The person | C．Whoever | D．Who |
Can you tell me __________
| A．who is that gentleman | B．that gentleman is who |
| C．who that gentleman is | D．whom is that gentleman |
What I'm considering now _________ the money we need.
| A．is | B．are | C．were | D．was |