Fred, who had expected how it would go with his daughter, had a great worry______ his mind. A. on S. in C. with D. at
This question is ______ easy, all the students can answer the question.
I don’t know _________.
When we practice speaking English, we often end up _____ in Chinese.
----_____do you improve your listening? ----I improve it ______ listening to tapes. A. How; with B: What; withC: How; by D. What; by
He ______ be a history teacher.