Do you have such an annoying colleague who plays the PC music ______ he were the only one working in the office?
| A．even if | B．as if |
| C．only if | D．now that |
—What’s Jack up to in the shoe shop? He’s there for ages.
—It’s ______ that he hasn’t decided which pair to buy.
| A．sure | B．obvious | C．confusing | D．curious |
Linda gave us a vivid _____ of her trip to Mount Lu after her return.
| A．account | B．explanation | C．imagination | D．direction |
On April 1, Jim tried to play a trick ______ his teacher but the teacher wasn’t taken _____.
| A．by; on | B．in; in | C．on; in | D．on; on |
Many children seldom communicate with adults, ________ it difficult for their parents to know what they are thinking about.
| A．making | B．makes | C．to make | D．made |
The headmaster demanded all the teachers ______ in the office.
| A．mustn’t smoke | B．did smoke |
| C．should smoke | D．not smoke |