Look out! Don’t get too close to the house________ roof is under repair.
| A．which | B．its | C．whose | D．who |
As you see , the number of cars on our roads________ rising these days.
| A．was keeping | B．keep | C．keeps | D．were keeping |
Only when I left my parents for Italy ________ how much I loved them.
| A．I realized | B．I had realized | C．had I realized | D．did I realized |
Up to now, he _______ most of the works by Mark Twain.
| A．is reading | B．has read | C．will read | D．reads |
At the meeting they discussed different ______ to the study of mathematics.
| A．approaches | B．means | C．methods | D．ways |
—How did you find the talk this morning?
—______.
| A．By asking my students | B．It was easy to find |
| C．Very disappointing | D．Just in time for it |