The physics problem is very difficult. Can you ________?A. work out it B. work it out C. work it on
— I feel tired and sleepy. — Why not stop _______?
— Where are you going, Jack? — My hair is too long. I’ll have it _______.
Many Chinese students found______ difficult to learn English grammar.
________ you can’t pass the exam?
If you don’t know how to spell the new word, please ________ in the dictionary.