Bob is ______ the market for your new product, why don't you call him right now？

A．Jim’s and Bob’s

B．Jim’s and Bob

C．Jim and Bob’s

D．Jim and Bob

Bob is one of the boys who ______ always punctual. (be)

A.if Bob has walked farther

B.if Bob should walk farther

C.had Bob walked farther

D.if Bob walked farther

A.Alice的公钥

B. Alice的私钥

C. Bob公钥

D. Bob的私钥

A．Where is Bob now

B．Where does Bob do

C．Where’s Bob from

A.Alice 的公钥

B.Alice 的私钥

C.Bob 的公钥

D.Bob 的私钥

A.Alice的私钥

B.Alice的公钥

C.Bob的私钥

D.Bob的公钥

Paul: Bob, ________________？

Bob: Oh, that's my father! And beside him is my mother.

A、what is the person over there

B、who's talking over there

C、what are they doing

D、which is that

A.Bob的公钥

B.Bob的私钥

C.Alice的公钥

D.Alice的私钥