. ---Have you paid your phone bill?
--- No, the bill is _____ at the end of the month.
| A．accurate | B．due | C．available | D．continuous. |
Keep up good state of mind even if you ________ fail plenty of times.
| A．must | B．will | C．can | D．should |
A left－luggage office is a place where bags ________ be left for a short time，especially at a railway station.
| A．should | B．can | C．must | D．will |
He was unhappy when he sold his guitar.After all，he________it for a very long time.
| A．has had | B．had had | C．has | D．had |
—Oh no! We're too late.The train________.
— That's OK.We'll catch the next train to London.
| A．was leaving | B．had left |
| C．has left | D．has been leaving |
—Could I use your car tomorrow morning?
—Sure.I________a report at home.
| A．will be writing | B．will have written |
| C．have written | D．have been writing |