It will be difficult ________ a robot_________ same things as a person,A. of, to do B. for, to do C. for, doing
Look out! The knife is very sharp(锋利的). You ______cut your finger.
Jake is just ___________as Tom.
_______all the stars, the sun is________ to the earth.
There is _______“f” in the word “fond”.
The more you learn, the more ________ you can pass the exam.