5.―Have you handed in your schoolwork yet?
―Yes，I have. I guess it ____ now.
| A．has graded | B．is graded | C．is being graded | D．is grading |
Our school called on us to donate our pocket money to the school damaged by the flood, _____ the students to return to their classrooms．
| A．enabling | B．having enabled |
| C．enable | D．to have enabled |
All we are required to do ______ record a "weike" where we explain what we think students are puzzled about．
| A．are | B．is | C．was | D．were |
It's not the score you've got, but the attitude you choose ______ determines our evaluation of your work．
| A．which | B．that | C．what | D．who |
So sudden_____ that the enemy had no time to escape．
| A．did the attack | B．the attack did |
| C．was the attack | D．the attack was |
—Why．Jack, you look so tired!
—Well．Ithe house and I must finish the work tomorrow．
| A．was painting | B．will be painting |
| C．have painted | D．have been painting |