He was ______ medical student before he turned _______ engineer.
| A．a; an | B．the; the | C．a; / | D．/; an |
The number 5.12 is a special number, ______I think, that will be remembered by the Chinese forever.
| A．what | B．it | C．which | D．one |
“Attention, please. Whoever can answer one of my questions______ receive a prize”, the teacher
said in class.
| A．might | B．shall | C．should | D．would |
— ______you write so well?
—By reading and keeping diaries every day.
| A．How is it | B．What is it |
| C．How is it that | D．What is it that |
—I called you many times yesterday morning, but I couldn’t get through.
—Oh. My brother ______on the phone all the time!
| A．was talking | B．has been talking | C．has talked | D．talked |
—Would you mind if I closed the window?
—______. It’s that cold outside.
| A．Sorry, I’m afraid | B．Yes, help yourself |
| C．Sorry, you don’t | D．No, go ahead |