On a peaceful summer day, he went to swim in the sea _____.
| A．at the first time | B．for the first time |
| C．the first time | D．in the first time |
Jack was soon told ________ he did was not necessary.
| A．why | B．that | C．how | D．why 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 |