I won’t believe it ______ I see it with my own eyes.
| A．and | B．that | C．until | D．if |
There are some words_______can cross countries and cultures，such as“OK”．“Huh’’and“mama”．
A．what B．which C．／
一British engineer，Tim Berners-Lee_______the idea of the World Wide Web in 1989．
一You’re right，and the World Wide Web is 25 years old this year．
A．caught up with
B．got along with
C．came up with
When seeing Sign _________，we have to drive straight．
一Climate change________mainly by too much CO 2 in the air．
一So I think the key is to produce electricity without creating CO2
A．is caused B．caused C．causes
一A child’s family background brings him or her a bright future．
一Not really . A study shows that reading for pleasure plays a more important _________.
A．part B．game C．joke