We couldn’t understand: what could ______ his sudden change of mind?
| A．enjoy | B．explain | C．accept | D．mean |
These events are _____ to each other.
| A．made | B．connected |
| C．linked | D．associated |
When you visit France, it is a _____ if you cannot speak French.
| A．harm | B．fault |
| C．error | D．disadvantage |
The new regulations will be of great _____ to us all.
| A．advantage | B．favour |
| C．benefit | D．kindness |
Various _____ of electric fans are now on display in the shop windows.
| A．boxes | B．sizes |
| C．standards | D．brands |
E-mail is a valuable _____ for college students at any level.
| A．hand | B．tool |
| C．product | D．data |