--I didn't tell my parents that I would leave home.
--You ________ when you left home since you are living with them.
| A．ought to have | B．might have | C．should | D．must |
—I wonder if you could go with me to the cinema.
— Don’t disturb me. I ______ a composition all the morning and haven’t finished it yet.
| A．write | B．was writing |
| C．have written | D．have been writing |
The girl, when _____ why she _____ in the exam, just lowered her head and kept silent.
| A．questioned; was cheated |
| B．being questioned; was cheating |
| C．questioned; had cheated |
| D．being questioned; has cheated |
Jim who is now our English teacher once ________ as a manager in an international
cooperation for 5 years.
| A．worked | B．had worked |
| C．was working | D．has worked |
—Dear me! It’s you, Bob! I ______ to recognize you at first sight!
—Nor did I! Time has changed us a lot!
| A．fail | B．failed |
| C．have failed | D．had failed |
_________ in the adult ceremony, the senior students feel they are shouldering heavier responsibilities now.
| A．Swear | B．Sworn |
| C．Having sworn | D．To have sworn |