---Who will address the students from our school this evening?
--- ______ to be the speaker.
| A．I am supposed | B．I will suppose |
| C．I have supposed | D．I was supposing |
Recently there have been many occasions____ you have attended events on your own.
| A．where | B．which | C．when | D．why |
My brother likes eating very much but he isn't very _____ about the food he eats.
| A．special | B．peculiar | C．particular | D．unusual |
Scientists are convinced the positive effect of laughter physical and mental health.
| A．of; at | B．by; in | C．of; on | D．on; at |
Prices of daily goods ________through a computer can be lower than store prices．
| A．are bought | B．bought | C．been bought | D．buying |
About 698,000 laptops were sold in China in second quarter, 12.1% in crease from a year ago.
| A．a; a | B．the; a | C．the; the | D．a; the |