— Could you please explain the assignment for Monday, Miss Smith?
— Certainly. Read the next chapter and come to class ________ to discuss what you’ve read.
| A．preparing | B．prepared |
| C．to prepare | D．to be prepared |
I raised the alarm _______ I saw the smoke.
| A．while | B．the minute |
| C．suddenly | D．since |
The doorkeeper gave the alarm _______ he saw the smoke.
| A．while | B．the instant |
| C．suddenly | D．before |
“Did you remember to give Mary the money you owed her?” “Yes, I gave it to her ________ I saw her.”
| A．while | B．the moment |
| C．suddenly | D．until |
“When did he leave the classroom?” “He left _______ you turned back to write on the blackboard.”
| A．the time | B．the moment |
| C．until | D．since |
“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 |