—Have you known each other for long ?
—Not very long . we came to this school , actually .
| A．before | B．since | C．after | D．when |
If you blood _____ badly, your hands and feet will get cold easily.
| A．passes | B．crosses | C．circulates | D．Circles |
_____ is often the case, we have worked out the production plan.
| A．Which | B．When | C．What | D．As |
She watches TV _______ evening and changes channels(频道) ____ few minutes.
| A．in; every | B．every; every | C．every; each | D．every; in |
She is good ______ playing the piano and good ______ her students, which is good _______ the students.
| A．at; for; to | B．to; to; for | C．at; to; for | D．to; at; for |
Now that you have a job, you must exert (努力) yourself in ______ you do at work.
| A．however | B．no matter what | C．no matter how | D．whatever |