The infrastructure of a country is makes everything run smoothly， including things like transport， irrigation， electricity， postal service， telephones and schools.
| A．that | B．what | C．which | D．as |
As his best friend , I can make accurate guesses about ___he will do or think.
| A．what | B．which | C．whom | D．That |
People in Chongqing are proud of_______they have achieved in the past ten years.
| A．that | B．which | C．what | D．How |
The last time we had great fun was _____ we were visiting the Water Park.
| A．where | B．how | C．when | D．why |
The companies are working together to create _____they hope will be the best means of transport in the 21st century.
| A．which | B．that | C．what | D．Who |
The seaside here draws a lot of tourists every summer. Warm sunshine and soft sands make ________ it is .
| A．what | B．which | C．how | D．Where |