When you are reading，make a note of ________ you think is of great importance.
| A．which | B．that |
| C．what | D．when |
It ____I who _____leaving for London.
| A．is…is | B．am…is | C．is…am | D．am…am |
Mr Smith， together with his children， ____arrived.
| A．are | B．has | C．is | D．have |
About 20 percent of the work ____done yesterday.
| A．are | B．is | C．were | D．was |
Ten thousand dollars _____quite a large sum.
| A．are | B．is | C．were | D．have |
This is one of the best novels that ____appeared this year.
| A．have been | B．has | C．had been | D．have |