Whether ways will be found to stop pullution or not is just ________ worries the public.
A.why B.which
C.that D.what
I would appreciate ________ you could give me some advice on learning English.
A.it whether B.it if
C.that when D.that if
The local Tibetans and Sherpas laughed at the strange bottles containing ________ they referred to as “English air”.
A.which B.that
C.how D.what
The decision was made ________ more medical teams would be sent to help people in the earthquake.
A.what B.which
C.that D.when
Mobile phone users have developed a series of symbols, such as and to show ________ they feel.
A.which B.when
C.how D.why
Inside the White House, there is a room called the Oval Office. That's ________ President Obama works.
A.why B.where
C.what D.how