—What was Tom doing _______ it was raining?
—He was doing his homework in the bedroom.
A. since B. while C. for D. who
Some scientists believe that there more robots in the future.
A will have B. will has
C. will be D. Are
They ________ TV at ten o’clock last night.
A. was watching B. were watching
C. watched D. Watches
It will be difficult ________ a robot_________ same things as a person，
A. of， do B. for， to do
C. for， doing D. for， do
I’m hungry. Would you mind ______me something to eat?
A. give B. to give C. giving D. Gives
--What about your study?
--I found ______ very difficult ______ all the subjects well.
A. it； learn B. that； to learn
C. it； to learn D. it； learning
