The secretary worked late into the night, ________ a long speech for the president.
| A．to prepare | B．preparing |
| C．prepared | D．was preparing |
You _________ be right, but I don’t think you are.
| A．can | B．could | C．must | D．should |
“Do you think he is lazy?” “I _________ so once, but I don’t now.”
| A．may have thought | B．can have thought | C．may think | D．might think |
| A．may not be | B．won’t be | C．couldn’t be | D．mustn’t be |
Mike is often absent from class.” “Tell him he _________ answer for it if he goes on behaving like that.”
| A．shall | B．will | C．would | D．can |
He tried to ________ in Japanese.
| A．understand himself | B．make himself understanding |
| C．make himself understood | D．make to understand |