It’s nearly eight o’clock. I must hang up and get down to work. My boss________ be here at any moment.

It’s nearly eight o’clock. I must hang up and get down to work. My boss________ be here at any moment.

A．should            B．must             C．could             D．would

It’s nearly eight o’clock. I must hang up and get down to work. My boss________ be here at any moment.

1. A.
   should
2. B.
   must
3. C.
   could
4. D.
   would

It’s nearly eight o’clock．I must hang up and get down to work．My boss       be here at any moment．  

    A． should                  B．must                C．could             D．would