-__________ has Line 22 (From Jinshanwei Station to Shanghai South Railway Station) been open to traffic?
Some scientists believe that theremore robots in the future. A.will have B. will has C. will be
One day I_________ to Australia. A. went B. will go C. go
It will be difficult ________ a robot_________ same things as a person, A. of, to do B. for, to do C. for, doing
Their life will be__________ if there are ____________children in a family. A. richer; less B. poorer; fewer C. richer; fewer
He always helps__________ the housework. A. with B. for C. in