It’s quite normal to ten percent of the cost of a building for a period of six months or so, in case faults are found in it.
| A．keep up | B． keep away | C．keep off | D．keep back |
It was the long March Rocket 2F, as reported, sent Shenzhou VI spaceship into space.
| A．which | B．what | C．that | D．as |
Just like spoken language, body language from culture to culture,
| A．changes | B．varies | C．exchanges | D．appears |
The setting sun was reflected on the river, ________ everything along the banks ________ all the more beautiful.
| A．to make; look | B．making; looking | C．making; to look | D．making; look |
Do you remember the day ________ we played all day along the seaside?
| A．which | B．that | C．when | D．about which |
The country's railway system has launched online ticket-booking and a real-name ticket purchasing system, and _______ requires passengers to provide their ID numbers when buying tickets.
| A．which | B．that | C．what | D．this |