．________ useful book is helpful to ________ artist.
| A．An, an | B．A, a | C．A; an | D．An; a |
My new computer has ______ the old one．
| A．twice as much memory as | B．as twice much memory as |
| C．twice memory as much as | D．as much twice memory as |
His father works in a company_______ name always appears in the local newspapers．
| A．when | B．whose | C．where | D．which |
—Look! Somebody ______the blackboard．
—Well, it wasn't me．I didn't do it．
| A．is cleaning | B．was cleaning |
| C．had cleaned | D．has cleaned |
After the speech, she was invited by the students _ ____ with them．
| A．take a photo | B．taking a photo |
| C．to take a photo | D．taken a photo |
The College Inn stands in a quiet place just ______ the school yard by the pine walk．
| A．to | B．for | C．off | D．out |