Jack _____ yet, otherwise he would have telephoned me.
| A．mustn’t have arrived | B．shouldn’t have arrived |
| C．can’t have arrived | D．needn’t have arrived |
Circus tigers, although they have been tamed, can _____ attack their trainer.
| A．unexpectedly | B．deliberately | C．reluctantly | D．subsequently |
The _____ of his clothes indicated too clearly that he had been playing football.
| A．state | B．condition | C．occasion | D．situation |
. When the entire class worked together they finished the project _____.
| A．in no way | B．in no time | C．on no account | D．in no case |
Paper making began in China and from there it _____ to North Africa and Europe.
| A．sprang | B．spilled | C．carried | D．spread |
Children who are over-protected by their parents may become _____.
| A．hurt | B．spoiled | C．damaged | D．harmed |