---- Will you answer the telephone? It ________ be your mother.
---- Sorry, I _______. I’m very busy.
| A．can, mustn’t | B．will, can’t |
| C．may, can’t | D．need, will |
They live in a house ____ face south.
| A．whose window | B．which window | C．which windows | D．whose windows |
They did not buy ___ milk.
| A．some | B．many | C．a lot of | D．much |
.Everybody must have ___ own choice.
| A．her | B．one’s | C．his | D．our |
One of them hasn't prepared __ lessons very well.
| A．one’s | B．his | C．their | D．our |
One should wash ___ hands before meals.
| A．his | B．her | C．oneself | D．one’s |