–Does it matter if I give it up this time?
-- It ____if you do. You won’t have ______chance.
| A．does; the other | B．does ; second |
| C．does matter; another | D．does matter; the other |
—Excuse me sir， where is Room 301？
—Just a minute. I’ll have Bob _____ you to your room.
| A．show | B．shows | C．to show | D．showing |
_____ on time， this medicine will be quite effective.
| A．Taking | B．Being taken | C．Taken | D．Having taken |
A railway station is no place for a child _____ alone at night.
| A．leave | B．leaving |
| C．to be leaving | D．to be left |
Anyone _____ bags， boxes， or whatever， was stopped by the police.
| A．seen carry | B．seen carrying |
| C．saw to carry | D．saw carrying |
When you’re learning to drive，_____ a good teacher makes a big difference.
| A．have | B．having | C．and have | D．and having |