As large numbers of Chinese flocked to Japan to pay thousands for toilet seats, it was a surprise to many people the smart toilet lids on sale in Japan were actually made in China．
| A．whether | B．how | C．which | D．that |
. ---Have you seen ____ iphone? I left it on the desk this morning.
---Is it ____ white one? I think I saw it somewhere.
| A．an; the | B．the; the |
| C．an; a | D．the; a |
It is a ________，but is a chance as well.
| A．task | B．question | C．challenge | D．work |
How long have you ________ in the army?
| A．joined | B．come | C．stayed | D．served |
—Why did Tony leave our company?
—He was________ a better job at Haier.
| A．provided | B．offered |
| C．protected | D．owned |
________that you come here earlier tomorrow or you'll be in trouble.
| A．Be sure of | B．Make sure |
| C．It's sure | D．Make sure of |