Don't come in ____ you are called．（ ）
A．untilB．becauseC．Since
After talking happily with my new friend， I gave her my WeChat number and she gave me___．（ ）
A．herB．hersC．Herself
We believe one belt，one Road （一带一路 ）will help China improve the with lots of countries．（ ）
A．relationshipB．situation
C．environment
Have you seen ___ TV play called In the name of people？
Yes， it's quite ____ excellent play!（ ）
A．a； theB．The； anC．/； an
The project is so difficult for your cousin．
Yes，I am wondering ________．（ ）
A．that he will finish it on time
B．whether he can finish it by himself
C．how could I help him out
D．can I do anything necessary for him