Is there a watermelon on the table？
_____．（ ）
| A． |
Yes，there is． |
B． |
Yes，it is． |
| C． |
No，there is． |
D． |
No，it isn't． |
You can keep one of the old photos．________ of them．（ ）
A．NeitherB．BothC．Either
We________ build our country into a country of peace，a country of wealth，a country of opening up．（ ）
A．mightB．shouldC．could
Could you please tell me ________？
For two weeks．（ ）
A．how soon he will be back
B．how long he will be away
C．how long will he be away．
We'll achieve our dreams some day ______ we keep trying and never give up．（ ）
A．as long asB．even though
C．so that
Shared bikes，which are environmentally friendly，______ quite popular among big cities in China since last April．（ ）
A．becameB．have become
C．will become