Computers in offices and homes since 1970s．
| A．was | B．had been used | C．have been used | D．has been used |
The question came up at the meeting_____ we had enough money for our research．
| A．that | B．which | C．whether | D．if |
Twenty of the students will have sports, the rest ___ studying here
| A．are | B．is | C．were | D．was |
He is a strict but kind-hearted father, ____ the children respect but are afraid of.
| A．/ | B．that | C．for whom | D．one whom |
She ______ behind the door in order not to be found. Two minutes later she was safe again.
| A．hold her breath | B．catch her breath |
| C．held her breath | D．lost her breath |
— How do you find your English teacher?
— She is always full of _____ as though she never knew tiredness.
| A．strength | B．force | C．energy | D．spirit |