Helen didn’t mention anything about the dinner over the phone; she seemed about our appointment.
| A．to have forgotten | B．to forget |
| C．having forgotten | D．forgetting |
. The weather in Beijing in winter is colder than_______ in Fuzhou.
| A．one | B．it | C．that | D．what |
Although _____ to stop, he kept on working.
| A．was told | B．telling | C．having told | D．told |
— Why not go and have dinner in a restaurant?
— _______. It’s too expensive.
| A．Why not | B．I agree | C．I’m afraid not | D．I’m sure |
His appearance has changed so much that you _____ not recognize him.
| A．must | B．need | C．may | D．ought |
When_________different cultures, we often pay attention only to the differences without noticing many similarities.
| A．compared | B．being compared | C．comparing | D．having compared |