To tell the truth, if it were not for the fact that you______ my daughter, I would not take such pains to serve you.
| A．were | B．are | C．had been | D．have been |
Eyewitness provides an evidence that he was ___ of the crime.
| A．guilty |
| B．concerned |
| C．cautious |
| D．mistaken |
Wash your hands with soap and water ___ after each contact with the sick person.
| A．occasionally |
| B．thoroughly |
| C．scarely |
| D．enough |
After the fun he has had during the holidays, the boy can’t ___ on his schoolwork.
| A．try |
| B．concentrate |
| C．take |
| D．depend |
Jim went to answer the phone. ___, Harry started to prepare lunch.
| A．However |
| B．Nevertheless |
| C．Besides |
| D．Meanwhile |
Clinical evidence began to ___, suggesting that the new drugs had as wider range of useful activities than had been predicted from experiments in animals.
| A．operate |
| B．strengthen |
| C．approve |
| D．accumulate |