The disease failed to _______ to the new drugs the doctor used.
| A．respond | B．reflect |
| C．reply | D．reduce |
More than one student _________ read the novels, which _________ written by David.
| A．has, was | B．have, were | C．has, were | D．have, was |
The boy, rather than his friends, _________ for the accident.
| A．are responsible | B．were responsible |
| C．be responsible | D．is responsible |
A poet and artist ____ coming to speak to us about Chinese literature and painting tomorrow afternoon.
| A．is | B．are | C．was | D．were |
The father as well as his three children ____ skating on the frozen river every Sunday afternoon in winter.
| A．is going | B．go | C．goes | D．aregoing |
We live day by day，but in the great things the time of days and weeks ____ so small that a day is unimportant.
| A．is | B．are | C．has been | D．havebeen |