She kept _________ hard at her physics and finally caught up with us.
| A．work | B．worked | C．working | D．to work |
One day I_________ to Australia.
| A．went | B．will go | C．go | D．goes |
It will be difficult ________ a robot_________ the same things as a person,
| A．of, to do | B．for, to do |
| C．for, doing | D．to, do |
He always helps__________ the housework.
| A．with | B．for | C．in | D．to |
Robots can do manyjobs, because they will never get___________.
| A．boring. boring | B．bored, boring |
| C．boring, bored | D．bored, bored |
Mrs. Brown is nice. Every day she tried to cook ______for me during my stay in Canada.
A.anything different B. something different
B. nothing different D. different something