--Who is the old man talking with your teacher?
---I don’t know. I him before.
| A．was never seeing | B．had never seen | C．never saw | D．wouldn’t see |
Before you decide to leave your job，_____ the effect it will have on your family.
| A．consider | B．considering | C．to consider | D．considered |
Children should be encouraged _____ up outside interests， such as music or sport.
| A．to take | B．taking | C．to have taken | D．having taken |
—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 |