You can’t imagine what difficulty we had________home in the snowstorm.
| A．walked | B．walking | C．to walk | D．walk |
I'm surprised to hear from her. ________, we last met ten years ago.
| A．On one hand | B．That is to say |
| C．Believe it or not | D．In other words |
Thanks to the Internet, different kinds of information ________ in a short time.
| A．can be learned | B．has been learned |
| C．can learn | D．has learned |
-- Our school bus will leave at 8 o'clock tomorrow. Don't be late.
-- OK. I will be there ten minutes________.
| A．sooner | B．slower |
| C．faster | D．earlier |
The rivers will become dirtier and dirtier ______ we take action to protect them.
| A．since | B．if |
| C．until | D．unless |
He is an honest boy. I have no reason to _______ what he said.
| A．hear | B．doubt |
| C．repeat | D．believe |