I like this room. You ______ see the mountains from the window.
| A．can | B．should | C．must | D．need |
Which book is ______ to understand， this one or that one?
| A．easy | B．easier | C．easiest | D．the easiest |
I phoned Sarah last night， ______ there was no answer.
| A．and | B．but | C．or | D．so |
I always go skiing with my friends ______ winter.
| A．in | B．on | C．at | D．for |
The students are talking about ______ holiday plans happily.
| A．his | B．her | C．its | D．their |