I can never forget the days _____ we worked together and the days ______ we spent happily together.
| A．for which; that | B．which; when | C．when; which | D．on which; when |
Many soldiers are reported _______ to the drought area to help the local people carry water in the past few weeks.
| A．to send | B．to be sent |
| C．to have been sent | D．to have been sending |
Three free tickets for the Expo will be given to ________ comes first in the competition.
| A．who | B．whom | C．whoever | D．whomever |
With the land prices ________, I can’t afford a piece of land big enough to park my car on.
| A．going up | B．gone up | C．go up | D．to go up |
________ is stronger than steel and lighter than a feather is the silk ________ spiders make their webs.
| A．That; that | B．Which; for which | C．What; what | D．What; with which |
________ you to be the first to solve the structure of DNA?
| A．What you think led | B．What do you think led |
| C．Do you think what led | D．What led you think |