We can no longer ________ to consider water an almost free resource that we can use as we like.
| A．permit |
| B．afford |
| C．expect |
| D．spare |
Neither my father nor I ____ at home.
| A．am | B．is | C．are | D．be |
Mary as well as her sisters ____ Chinese in China.
| A．are studying | B．have studied | C．studies | D．study |
Neither Tom nor Jack and I ____ his students.
| A．are | B．am | C．is | D．was |
The rich ____ not always happy.
| A．are | B．is | C．has | D．have |
I, who____ your friend, will try my best to help you with your English.
| A．am | B．is | C．are | D．be |