We ________ at six o'clock, and hope ________ most of the journey by lunchtime.

1. A.
   were leaving; to do
2. B.
   left; to have done
3. C.
   are leaving; to have done
4. D.
   will; to do

We ________ at six o'clock, and hope ________ most of the journey by lunchtime.

[　　]

A．were leaving; to do

B．left; to have done

C．are leaving; to have done

D．will; to do

They ________ have arrived at lunchtime but their flight was delayed.

A．will 

B．can

C．must 

D．should

They        have arrived at lunchtime but their flight was delayed.

A. will          B. can             C. must        D. should

They        have arrived at lunchtime, but their flight was delayed.

1. A.
   will
2. B.
   can
3. C.
   must
4. D.
   should