6． Bob _______come．

A． sure to

B． sure

C．is

D．is sure to

[单选题]John was busy, ______he could not come.A.butB.thereforeC.andD.nor

[单选题]I am not [certain]whether he will come.A.determinedB. sureC. sorryD.glad

Look. He is still standing there, _______ a newspaper and waiting for a bus to c

（单选题，2分）（）John: Jack, come and meet my friend Bob.____.Jack: Nice to meet you.Bo

[单选题]John and Bob have returned but ______ students in the class haven't come ba

[单选题]6．A．aB．anC．theD．/

[单选题]6．A． whatB． howC． whyD． where

[单选题]6．A．laterB．shorterC．longerD．stronger

6.A. 15mB. 20mC. 30m

6.