---- There’s no light on. ---- They ________ be at home.
| A．can’t | B．mustn’t | C．needn’t | D．oughtn’t to |
We have been told that under no circumstances ___ the telephone in the office for personal affairs.
| A．may we use | B．we may use | C．we could use | D．did we answer |
You’ll start having positive results you replace negative thoughts with positive ones .
| A．since | B．unless | C．until | D．once |
You’d better not phone me tomorrow evening; I ____ an important meeting then.
| A．will have | B．would have | C．will be having | D．will have had |
_____around the Water Cube, we were then taken to see the Bird’s Nest .
| A．Having shown | B．To be shown | C．Having been shown | D．To show |
—Go and have great fun! I will cope with _____ you leave to me properly.
—Thanks a lot.
| A．why | B．when | C．what | D．which |