You shouldn’t keep silent when __________．
| A．speaking | B．spoken to | C．spoken | D．speaking t |
I’ll be free ___ seven o’clock.
| A．after | B．on | C．in | D．at |
We offered him our congratulations ___ his passing the college entrance exams.
| A．at | B．on | C．for | D．of |
In the dark street, there wasn’t a single person ___ she could turn for help.
| A．that | B．who | C．from whom | D．to whom |
___ this book and tell me what you think of it.
| A．Look through | B．Look on | C．Look into | D．Look up |
He decided to visit the family ___ Friday night.
| A．at | B．in | C．on | D．over |