一、单项选择（20分）
1. -- ____ do you study for your math test? -- ____ working with my classmates or asking the teacher for help.
A. How; By B. What; By C. When; In D. Why; In
2. I can’t believe what you said _______ I see what you do.
A. for B. unless C. if not D. without
3. He has no pens_______ .
A. to write B. writing C. to write with D. to write in
4. Who do you think ________ English best in your class?
A. lean B. learning C. learns D. learned
5. Mario is afraid of _______ alone.
A. be B. being C. is D. are
