The girl was very naughty. She hid her mother’s wallet without anyone ________ where it was.
| A．knows | B．knew | C．known | D．knowing |
“Don't get near to it.It’s too dangerous!” “_____”
| A．Yes, I won't | B．No, I don't | C．No, I can't | D．No, I won't |
She was disappointed that most of the guests ___when he ___ at the party.
| A．left, had arrived | B．left, arrived | C．had left, had arrived | D．had left, arrived |
As a graducate in computer science, he ___ to work out the problem.
| A．wouldn't have failed | B．can't have failed | C．mustn’t have failed | D．might not have failed |
I don't think ___ possible to master a foreign language without much memory work.
| A．this | B．that | C．its | D．it |
If you want to borrow a football after school, your student card ___ here.
| A．has to leave | B．must leave | C．has to be left | D．must be left |