I can’t leave. She told me that I _______ stay here until she comes back.
| A．can | B．must | C．will | D．may |
—Sandra failed to pass the exam.
— __________ ? Nobody works harder than she does.
| A．How come | B．How about | C．Why not | D．What for |
—You never think of others ! You kept me waiting for two hours.
—I’m sorry that you _________ think so.
| A．would | B．could | C．might | D．should |
No one was sure exactly__________ he wanted
| A．how was it that | B．how it was that | C．what was it that | D．what it was that |
Not until____________the exam _________ the importance of doing homework.
| A．had he failed; he realized | B．he had failed; did he realize | C．he had failed; he realized | D．had he failed; did he realize |
I’m not sure whether be has finished writing the book, but he________ it last month.
| A．worked at | B．was working on | C．worked on | D．was working at |