He makes it a essential to put some money aside each month.
| A．principal | B．principle | C．essential | D．discipline |
William’s first stop was in _____ is a small town under the Himalayas.
| A．where | B．which | C．that | D．what |
----Would you mind if I turned off the light?
----____________.
| A．Yes, go ahead | B．No, please don’t | C．Go ahead, please | D．Certainly, do as you please |
---- You _____ have given them some advice.
---- So I did, but who cared what I said?
| A．must | B．ought to | C．might | D．could |
— Mr White has been working all the morning with no rest.
— He is a(n) ________ man. He never looks tired.
| A．energetic | B．powerful | C．lovely | D．attractive |
Mary is being punished（惩罚） by the headmaster. That was______ she broke the school rules.
| A．why | B．because of | C．the reason why | D．because |