We believe One Belt，One Road（一带一路） will help China improve the _____ with lots of countries．（ ）
| A． |
population |
B． |
situation |
| C． |
environment |
D． |
relationship |
Shanghai is a very city．（ ）
| A． |
big |
B． |
bigger |
C． |
biggest |
Not only Sam but also his parents coming to China soon．（ ）
| A． |
is |
B． |
are |
C． |
were |
Mr. Smith a novel last year but I don't know whether he has finished it．（ ）
| A． |
wrote |
| B． |
was writing |
| C． |
has written |
The girl is wearing a blue dress is my sister．（ ）
| A． |
whom |
B． |
which |
C． |
who |
Susan Tina are good friends．（ ）
| A． |
or |
B． |
and |
C． |
but |