The teachers are very patient when we ask ________ for help．（ ）
| A． |
they |
B． |
them |
C． |
their |
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
Nobody taught the old lady how to use Wechat． She learned it all by ____．（ ）
A．sheB．herC．herselfD．hers
Fishing is one of ____ activities among the middle﹣aged people．（ ）
A．popularB．more popular
C．most popularD．the most popular