______ some problems have arisen in the process, we are confident that we can handle them.
| A．As | B．If | C．While | D．Since |
Please keep silent. I’m a Singeron TV and I want to watch it.
| A．is being broadcast | B．has been broadcast |
| C．is broadcasted | D．was broadcasted |
Tokyo has become the host of the 2020 Olympic Games, which is the biggest sportingon the planet.
| A．struggle | B．experience |
| C．event | D．preparation |
—Have you finished your homework?
—Not yet. Now I regretthe whole afternoon surfing on the Internet.
| A．wasting | B．in wasting |
| C．to waste | D．to be wasting |
Chinese people between the ages of 18 and 70 read 6. 7 bookslast year, including paper books and e-books.
| A．on purpose | B．on average |
| C．in return | D．in common |
The weather that day may not be as good as expected, in
case we will have to put off the event.
| A．what | B．that |
| C．this | D．which |