----Have the Smiths moved to California?---Not yet but they have .A. decided toB. deci

问题补充：

----Have the Smiths moved to California?

-----Not yet, but they have .

A. decided to

B. decided it

C. decided

D. decided to move

答案：

(答案→)A. decided to

B. decided it

C. decided

D. decided to move

解析：考查不定式的省略。不定式的省略通常都只保留不定式符号to,把后面的内容都省略。句意：—斯密斯先生一家搬去加利福尼亚了吗？—还没有，但是他们已经决定搬过去了。本题省略了move to California.故A正确。