The police say radio signals were probably used to set the bomb __________.
| A．about | B．down | C．off | D．out |
—Tom, have you finished your homework?
—Yes, I ________ before you came back, mom.
| A．finished | B．have finished | C．had finished | D．finish |
I wonder why you didn’t do as ________ and it’s the third time you have done this.
| A．telling | B．be told | C．told to | D．tell |
It was so dark outside that the little child ________ go out by himself.
| A．dare not to | B．dared | C．dares | D．didn’t dare to |
It is a great pity that the band which Jack was a member of ____ after 26 years of
playing together on stage.
| A．broke up | B．put up | C．sent up | D．took up |
Workers who cannot speak good English may be at disadvantage ____ with foreign
customers.
| A．when interacting | B．when interacted |
| C．when to interact | D．when being interacted |