Would you please speak ____ a loud voice? I didn’t catch what you said, with all the noise going on.
| A．in | B．on | C．of | D．to |
Because of too many differences between the two sides, a lot of questions are still left ________.
A in the airB on the airC by the airD through the air
______ it is to learn English on the internet!
| A．What a fun | B．What fun | C．How a fun | D．How fun |
Would you____holding this box for me while I open the door?
| A．care | B．like | C．mind | D．matter. |
Most of us know we should cut down fat, but knowing such things isn’t much help when it____shopping and eating.
A refers to B. speaks of C. focuses on D. comes to
He didn't realize he had forgot his bag _____ the plane had taken off.
| A．unless | B．until | C．if | D．or |