Only in this way ____to make an improvement in the operating system.
| A．you can hope | B．you did hope | C．can you hope | D．did you hope |
—We have to stop talking here outside. Listen, _____!
—Hurry up, or we’ll be late.
| A．there goes the bell | B．there does the bell go |
| C．there the bell goes | D．goes the bell there |
The man as well as his horse ____ crossed the river ____ from Tokyo.
| A．which; come | B．that; comes | C．who; came | D．that; come |
Between the two parts of the concert is an interval, ______ the audience can buy ice-cream.
| A．when | B．where | C．that | D．which |
—He should have come to join in the thorough cleaning.
—He _____. I don’t think it was his turn.
| A．needn’t have to | B．needn’t have |
| C．didn’t have to | D．doesn’t need to |
It has been announced that all the students ____ put on masks before going to school in case they are infected with SARS virus.
| A．shall | B．will | C．need | D．may |