Things made of plastic are usually _______, but they are _______ to get polluted.
| A．cheap; easy | B．cheap; easier | C．cheaper; easy | D．cheaper; easier |
--- What do you think of her acting skills? --- Oh, no one does_______．
| A．good | B．well | C．better | D．best |
.--- Where is your father?
--- I'm not sure. He_______ in the office.
| A．must be | B．maybe | C．may be | D．perhaps |
The children all looked_______ at the broken model plane and felt quite_______.
| A．sad, sad | B．sadly, sadly | C．sad, sadly | D．sadly, sad. |
---Do you know our town at all? ---No, this is the first time I_______ here.
| A．was | B．have been | C．came | D．am coming |
- Are the new rules working? - Yes, _______ books are stolen.
| A．Few | B．More | C．Some | D．None |