____ to light for a long time, the potatoes turned green.
| A．Introduced to | B．Exposed to | C．Linked to | D．Connected to |
--- Shall I give you a ride as you live so far away?
---- Thank you. ______.
| A．It couldn’t be better |
| B．Of course you can |
| C．If you like |
| D．It’s up to you |
Their use was limited by laws, the first of which ______ the 14th century.
| A．dates back to | B．dated fro |
| C．dates back | D．dating back to |
_____ I see someone wearing a mask, I think of my holiday in Venice.
| A．Even if | B．Until |
| C．Whenever | D．Although |
All happy families _____ one another, but each unhappy family is unhappy in its own way.
| A．resemble | B．are similar |
| C．similar to | D．resemble to |
I don’t think the old man saw me—he _____ a newspaper.
| A．is reading | B．had read |
| C．read | D．was reading |