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
________that we can’t get the necessary equipment，we will have to give up the experiment.
A．To assume B．Assumed C．Assumes D．Assuming
