Tom kept quiet about the accident _____ lose his job.
| A．in not order to | B．in order not to |
| C．in order to not | D．not in order to |
--Can I have your name, sir?
--Err… Albert Johnson, if you _______ know.
| A．must | B．can | C．may | D．need |
Do you know the boy under the tree_______ is playing with a dog/
| A．which | B．as | C．who | D．what |
Many people believe if you are _______, better things will happen to you.
| A．pessimistic | B．attractive |
| C．optimistic | D．ordinary |
I’ve just read your blood test report and all seems OK, so there’s _______ to worry about.
| A．something | B．anything |
| C．nothing | D．Everything |
--Could you help me with some math problems?
--Sure. That’s _______ I’m here.
| A．whether | B．how | C．when | D．why |