.---Did your father come back early last night?
---Yes. It was not yet eight o’clock ______ he arrived home.
| A．before | B．when | C．that | D．until |
After he got in touch with the Red Cross, Mr. Green ______ helping homeless women and children to a safe place.
| A．set out | B．set about |
| C．set off | D．set down |
My computer is out of _________ order all of a sudden. Could you do me________ favor and type the plan for me right now?
| A．the; a | B．the; 不填 | C．不填; a | D．不填; 不填 |
— Why are your hands that dirty?
— Oh, I______ in the garden since we finished breakfast.
| A．worked | B．was working |
| C．am working | D．have been working |
Yesterday I went to see him, _________ that he had gone abroad two days before.
| A．only to learn | B．to learn only |
| C．only learned | D．only learning |
Every year，a good many tourists are attracted to visit the old temple ________back to the eleventh century.
| A．dated | B．dating | C．to date | D．being dated |