The chemistry teacher demanded that the laboratory report _______ immediately after the experiment was done.
| A．to be written | B．would be written | C．be written | D．must be written |
—Why don’t you buy an Audi instead of that car?
— I’d love to, but I can’t that right now.
| A．have | B．afford | C．spend | D．Pay |
Selecting a mobile phone for personal use is no easy task because technology so rapidly.
| A．is changing | B．will have changed |
| C．has changed | D．will change |
When a piece of ice is taken into a warm room, it will become smaller and smaller, until in the end it completely.
| A．is disappeared | B．will disappear |
| C．is disappearing | D．disappears |
They decide to have another factory set up in this town.
| A．paper-made | B．making-paper |
| C．paper-making | D．make-paper |
There is no exact definition of word “happiness”. People are happy for all sorts of reasons.
| A．/; the | B．a; the | C．the; a | D．/; a |