The government announced that six highways by the end of last year.
| A．built | B．had built | C．have been built | D．had been built |
Nobody except Bill and John ______ entered the second round of the interview.
| A．have | B．has | C．has been | D．have been |
–What has made him upset recently?
--________alone to face a troublesome milk case.
| A．Left | B．Being left |
| C．Having left | D．To leave |
Had Tom taken medicine just as the doctor said yesterday, he_______ quite right now.
| A．must have been | B．would have been |
| C．were | D．would be |
________ in his paper, he didn’t notice his teacher coming .
| A．Having absorbed | B．Absorbed |
| C．Absorbing | D．Being absorbed |
________ the computer competition quite well, he won the first prize.
| A．Preparing | B．Having prepared |
| C．To prepare | D．Prepared |