It is well-known to us all that knowledge is __ treasure, but practice is ___ key to it.
A.a, ∕ | B.a, the | C.the, the | D.∕ , the |
The engineer ________ my father works is about 50 years old.
A.to whom | B.on whom |
C.with which | D.with whom |
They arrived at a farmhouse,in front of ________ sat a small boy.
A.whom | B.who | C.which | D.that |
The pen ________ he is writing is mine.
A.with which | B.in which |
C.on which | D.by which |
Can you lend me the book ________ the other day?
A.about which you talked | B.which you talked |
C.about that you talked | D.that you talked |
At the party,John made up a joke,________ people burst out laughing.
A.on which | B.by which | C.at which | D.from which |