I won't stop loving English ___________ the sun rises in the west．（ ）
A．ifB．althoughC．becauseD．unless
Li Lei and his cousin made some zongzi by ________ during the Dragon Boat Festival．（ ）
A．themB．theyC．themselves
The Chinese survey team remeasured（重新测量）Qomolangma successfully ________ May 27，2020．（ ）
A．inB．onC．at
We don't know ______，but it tells us the importance of friendship．（ ）
A．what the story is about
B．whether the story is true
C．when did the story take place
As one of the most exciting sports，volleyball ______ in the Olympic Games in 1964．（ ）
A．includedB．is included
C．was included
Du Fuguo is a hero ______ is known to millions of Chinese people．（ ）
A．whoB．whichC．what