Helen has got ________ it takes to be a great tennis player. In other words, she has the potential to become world famous.

A．how B．what

C．when D．that

It remains to be seen ________ this plan is practical enough to keep the project going.

A．whether B．how

C．where D．when

Sometimes, ________ we show our gratitude for a person is reflected in the kind of food we serve him or her.

A．when B．whether

C．why D．how

—I wonder ________ so many people are crazy about Gangnam Style.

—It's good for bodybuilding, and it brings people a lot of fun, you know.

A．how B．where

C．why D．that

—How do you think I can make up with Tom?

—Put aside ________ you disagree and try to find ________ you have in common.

A．what; what B．where; what

C．what; whether D．where; whether

Although he has become wealthy, Mr. Wood remains ________ he used to be, modest and friendly.

A．when B．where

C．how D．what

You must notice ________ the emergency exit is when you enter the building.

A．which B．where

C．what D．in which

Rosa regretted giving her opinion about the decision directly, feeling ________ she should have expressed it differently.

A．how B．why

C．that D．if

The mother, who is strict with her two daughters, has a clear list of ________ they are not permitted to do.

A．why B．how

C．what D．which

After a day's exhausting climb we arrived at ________ we had been told was Garden in the Air.

A．what B．which

C．that D．where