--Why didn’t you come to Simon’s party last night?
---I wanted to, but my mom simply _________ not let me out so late at night.
| A．could | B．might | C．would | D．should |
And video cameras can be used to_______ people’s actions at home.
| A．keep | B．make | C．record | D．watch |
The international police has come into existence and they were ____ the key to global security.
| A．thus | B．for | C．or | D．otherwise |
The boy was in the water and his canoe was_______ away.
| A．running | B．floating. | C．flowing | D．pulling |
The task is hard, ____, the workers managed to finish it in time.
| A．therefore | B．otherwise | C．however | D．yet |
Mrs. Clarke raised the kettle and _______the water over the hand.
| A．spread | B．dropped | C．poured | D．covered |