Man differs from beasts ______ the former is able to think, while the latter aren’t.
| A．once | B．as long as | C．in that | D．for |
Little_____that we were watching his every move,so he seemed to be going his own way in this business.
| A．he realized | B．he didn’t realize |
| C．didn’t he realize | D．did he realize |
The field research will take Joan and Paul about five months;it will be a long timewe meet them again.
| A． | after | B． | before |
| C． | since | D． | when |
John received an invitation to dinner,and with his work_____ ,he gladly accepted it.
| A．finished | B．finishing |
| C．having finished | D．was finished |
—Did Peter fix the computer himself?
—He _______,because he doesn’t know much about computers.
| A．has it fixed | B．had fixed it |
| C．had it fixed | D．fixed it |
Last week,only two people came to look at the house, ______wanted to buy it.
| A．none of them | B．both of them |
| C．none of whom | D．neither of whom |