Paper books still play an important role in the US textbook market, with digital textbooks __________ less than 5 percent of the total.
| A．composing of | B．making up | C．consisted of | D．accounted for |
–Have you finished your university education?
-- Yes. I ________ in Shandong University for five years.
| A．had studied | B．have studied | C．study | D．studied |
Fill in the blanks with articles where．
| A．necessary | B．necessarily | C．is necessary | D．it necessary |
--What made her so upset?
-- __________
| A．Lost her bike. | B．Losing her bike, |
| C．She lost her bike . | D．Because of losing her bike. |
—Sorry, Mr. Wang. I didn’t finish the assignment yesterday.
Oh, you ________ have done it as yesterday was the deadline.
| A．must | B．mustn’t | C．should | D．shouldn’t |
—How long do you think it will be___ the Stock Market returns to normal?
—At least one year, I guess.
| A．before | B．when | C．until | D．that |