A、did't I
B、does he
C、did I
D、doesn't he
第1题:
A.knows...how
B.know...how
C.knows...what
D.knew...what
第2题:
Very few ___ his address in the town.
A、has known
B、are knowing
C、know
D、knows
第3题:
79、推测下列气相反应自发的是
A.Kr++ He → Kr +He+
B.Si+ Cl+→ Si++Cl
C.Cl-+ I → I-+Cl
D.Cl-+ F→ F-+Cl
第4题:
"Oh, I'm sorry," he ______ her.
A、cried
B、told
C、apologized
D、said
第5题:
第6题:
推测下列气相反应自发的是
A.Kr++ He → Kr +He+
B.Si+ Cl+→ Si++Cl
C.Cl-+ I → I-+Cl
D.Cl-+ F→ F-+Cl