________ watching a movie in an IMAX cinema costs over 100 yuan, the IMAX cinemas are always full of audience．
| A．Although | B．As |
| C．When | D．Since |
There is lots of interesting work to do here, so I _____ feel bored.
| A．always | B．often | C．usually | D．never |
--_______ are you going back to London, Tony?
---At the end of July.
| A．How | B．When | C．Why | D．Where |
Thanks to better health care, more people are living _____ lives today than before.
| A．longer | B．richer | C．busier | D．easier |
The Science Museum is popular because people _____ do experiments there.
| A．can | B．must | C．would | D．should |
In America, you can open your presents immediately. You don’t have to ______!
| A．pay | B．wait | C．check | D．prepare |