It remains ________ whether the students will benefit from the monthly exams.
| A．seeing | B．to be seen | C．to see | D．to have seen |
Between the two rows of trees ____ the teaching building.
| A．stand | B．stands | C．standing | D．are |
I have finished a large part of the book, the rest of which___ more difficult.
| A．is | B．are | C．was | D．were |
The whole class ____ the teacher attentively.
| A．are listening to | B．is listening to |
| C．are listening | D．is listening |
____of the money____ nm out.
| A．Three-fifth; has | B．Three-fifth; has been |
| C．Three-fifths; has | D．Three-fifths; have |
Ten minutes____ an hour when one is waiting for a phone call.
| A．seems | B．seem | C．seemed | D．seemes |