.--- Hi ,Tracy, you look tired.
--- I am tired. I ____the living room all day.
| A．painted | B．had painted |
| C．have been painting | D．have painted |
Guess what! I haven't used this pen for ages and it ______.
| A．was still writing | B．is still writing |
| C．is still written | D．still writes |
With the monthly test approaching, Paul is busy preparing for it, only_____ playing basketball to relax a bit.
| A．occasionally | B．seldom |
| C．rarely | D．frequently |
According to the new class rule, students foundcellphones in the classrooms will be asked to leave the rooms immediately.
| A．use | B．to use | C．using | D．having used |
It is a widely held belief____honesty and integrity(正直) are the qualities ____ a leader should be made of.
| A．that; that | B．that; what |
| C．which; what | D．what; that |
Scientists believe that it might be several years ______ the medicine can be used on human beings.
| A．since | B．when | C．before | D．until |