Could you tell me at this time last weekend？
I was studying for the exams．（ ）
| A． |
what you were doing |
B． |
what were you doing |
| C． |
how were you doing |
D． |
how you were doing |
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
Philips，______ you make so much noise when your little sister is sleeping？
Sorry，Mum．I'll stop right away．（ ）
A．canB．mayC．must