How strange! You sit in your room for a long time， Li Ming．
I just want to be quiet for a while． I'm sorry， Dad． I failed the test again．（ ）
A．in silenceB．in personC．in publicD．in fact
____ smart the driverless car is! I really want to have one．（ ）
A．WhatB．What aC．What anD．How
A mobile phone with 5G can send videos much ____ than the one with 4G．（ ）
A．fastB．faster
C．fastestD．the fastest
It is said that one Greater Bay Area university ____ in Guangdong in the future．（ ）
A．will be builtB．build
C．will buildD．is built
We should take care of the earth ____ we can make a better world to live in．（ ）
A．so thatB．untilC．even ifD．while
Young people are encouraged to work hard ____their own dreams．（ ）
A．achieveB．achievesC．to achieveD．achieved