It is ten years since we ________ each other. We have been working together.
| A．know | B．knew |
| C．get to know | D．got to know |
“Will he agree to come to join us in the work?” “No, _______ we promise him more money.”
| A．when | B．unless |
| C．unless | D．as soon as |
“Would you mind my sitting here with you?” “No, ______ you aren’t too noisy.”
| A．when | B．if |
| C．unless | D．as soon as |
“Shall Mary come and play computer games?” “No, _______ she has finished her homework.”
| A．when | B．since |
| C．unless | D．as soon as |
_______ the sun rising slowly in the east, the scene is a perfect dream.
| A．Seeing | B．To be seeing |
| C．When you see | D．Having seen |
______ for something, a receipt is given to you.
| A．Paying | B．Having paid |
| C．When you have paid | D．To be paying |