Appointed as ____chairman to China, Mr. Xi was determined to serve his country____ heart and soul.
| A．an, the | B．the; a |
| C．the; the | D．/; / |
Could I speak to__________ is in charge of International Sales ,please?
| A．anyone | B．someone | C．whoever | D．nomatter who |
The traditional view is ______ we sleep because our brain is “programmed” to make us do so.
| A．when | B．why | C．whether | D．that |
______ he referred to in his article was unknown to the general reader.
| A．That | B．What | C．Whether | D．Where |
____ matters most in learning English is enough practice.
| A．What | B．Why | C．Where | D．Which |
I just wonder __________ that makes him so excited.
| A．why it does | B．what he does | C．how it is | D．what it is |