Excuse me，Li Sisi，what is the meaning of"the Belt and Road Initiative"（一带一路） of China？
Sorry，Nancy， ，but we can learn it on Internet together，（ ）
| A． |
I don't know． |
B． |
I don't think so． |
| C． |
I don't think of it． |
D． |
I can't remember it． |
Peter， have you ever been to the English Corner？
Oh，yes．I there to practice speaking once a week last term．（ ）
| A． |
went |
B． |
go |
C． |
have gone |
D． |
will go |
It was for us to solve the math problem， few of us could even understand it．（ ）
| A． |
easy enough |
B． |
enough easy |
| C． |
difficult enough |
D． |
enough difficult |
There is a knock at the door． It my mom． It's time for her to be back home．（ ）
| A． |
may be |
B． |
may not be |
C． |
must be |
D． |
mustn't be |
The children here improve their English listening and speaking every day．（ ）
| A． |
on |
B． |
through |
C． |
with |
D． |
by |
Have you seen my mobile phone， Sam？ I can't find it ．（ ）
| A． |
everywhere |
B． |
somewhere |
C． |
nowhere |
D． |
anywhere |